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Kinoshita K, Motomura K, Ushida K, Hirata Y, Konno A, Hirai H, Kotani S, Hitora-Imamura N, Kurauchi Y, Seki T, Katsuki H. Nurr1 overexpression in the primary motor cortex alleviates motor dysfunction induced by intracerebral hemorrhage in the striatum in mice. Neurotherapeutics 2024:e00370. [PMID: 38704311 DOI: 10.1016/j.neurot.2024.e00370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 04/01/2024] [Accepted: 04/24/2024] [Indexed: 05/06/2024] Open
Abstract
Hemorrhage-induced injury of the corticospinal tract (CST) in the internal capsule (IC) causes severe neurological dysfunction in both human patients and rodent models of intracerebral hemorrhage (ICH). A nuclear receptor Nurr1 (NR4A2) is known to exert anti-inflammatory and neuroprotective effects in several neurological disorders. Previously we showed that Nurr1 ligands prevented CST injury and alleviated neurological deficits after ICH in mice. To prove direct effect of Nurr1 on CST integrity, we examined the effect of Nurr1 overexpression in neurons of the primary motor cortex on pathological consequences of ICH in mice. ICH was induced by intrastriatal injection of collagenase type VII, where hematoma invaded into IC. Neuron-specific overexpression of Nurr1 was induced by microinjection of synapsin I promoter-driven adeno-associated virus (AAV) vector into the primary motor cortex. Nurr1 overexpression significantly alleviated motor dysfunction but showed only modest effect on sensorimotor dysfunction after ICH. Nurr1 overexpression also preserved axonal structures in IC, while having no effect on hematoma-associated inflammatory events, oxidative stress, and neuronal death in the striatum after ICH. Immunostaining revealed that Nurr1 overexpression increased the expression of Ret tyrosine kinase and phosphorylation of Akt and ERK1/2 in neurons in the motor cortex. Moreover, administration of Nurr1 ligands 1,1-bis(3'-indolyl)-1-(p-chlorophenyl)methane or amodiaquine increased phosphorylation levels of Akt and ERK1/2 as well as expression of glial cell line-derived neurotrophic factor and Ret genes in the cerebral cortex. These results suggest that the therapeutic effect of Nurr1 on striatal ICH is attributable to the preservation of CST by acting on cortical neurons.
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Affiliation(s)
- Keita Kinoshita
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences and School of Pharmacy, Kumamoto University, Kumamoto, Japan
| | - Kensuke Motomura
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences and School of Pharmacy, Kumamoto University, Kumamoto, Japan
| | - Keisuke Ushida
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences and School of Pharmacy, Kumamoto University, Kumamoto, Japan
| | - Yuma Hirata
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences and School of Pharmacy, Kumamoto University, Kumamoto, Japan
| | - Ayumu Konno
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Shunsuke Kotani
- Global Center for Natural Resources Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Natsuko Hitora-Imamura
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences and School of Pharmacy, Kumamoto University, Kumamoto, Japan
| | - Yuki Kurauchi
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences and School of Pharmacy, Kumamoto University, Kumamoto, Japan
| | - Takahiro Seki
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences and School of Pharmacy, Kumamoto University, Kumamoto, Japan; Department of Pharmacology, School of Pharmacy, Himeji Dokkyo University, Hyogo, Japan
| | - Hiroshi Katsuki
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences and School of Pharmacy, Kumamoto University, Kumamoto, Japan.
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Kawabata H, Konno A, Matsuzaki Y, Sato Y, Kawachi M, Aoki R, Tsutsumi S, Togai S, Kobayashi R, Horii T, Hatada I, Hirai H. Improving cell-specific recombination using AAV vectors in the murine CNS by capsid and expression cassette optimization. Mol Ther Methods Clin Dev 2024; 32:101185. [PMID: 38282896 PMCID: PMC10811426 DOI: 10.1016/j.omtm.2024.101185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 01/04/2024] [Indexed: 01/30/2024]
Abstract
The production of cell-type- and age-specific genetically modified mice is a powerful approach for unraveling unknown gene functions. Here, we present a simple and timesaving method that enables adeno-associated virus (AAV)-mediated cell-type- and age-specific recombination in floxed mice. To achieve astrocyte-specific recombination in floxed Ai14 reporter mice, we intravenously injected blood-brain barrier-penetrating AAV-PHP.eB vectors expressing Cre recombinase (Cre) using the astrocyte-specific mouse glial fibrillary acidic protein (mGfaABC1D) promoter. However, we observed nonspecific neuron-predominant transduction despite the use of an astrocyte-specific promoter. We speculated that subtle but continuous Cre expression in nonastrocytic cells triggers recombination, and that excess production of Cre in astrocytes inhibits recombination by forming Cre-DNA aggregates. Here, we resolved this paradoxical event by dividing a single AAV into two mGfaABC1D-promoter-driven AAV vectors, one expressing codon-optimized flippase (FlpO) and another expressing flippase recognition target-flanked rapidly degrading Cre (dCre), together with switching the neuron-tropic PHP.eB capsid to astrocyte-tropic AAV-F. Moreover, we found that the FlpO-dCre system with a target cell-tropic capsid can also function in neuron-targeting recombination in floxed mice.
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Affiliation(s)
- Hayato Kawabata
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Ayumu Konno
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
- Viral Vector Core, Gunma University, Initiative for Advanced Research, Maebashi, Gunma 371-8511, Japan
| | - Yasunori Matsuzaki
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
- Viral Vector Core, Gunma University, Initiative for Advanced Research, Maebashi, Gunma 371-8511, Japan
| | - Yumika Sato
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Mika Kawachi
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Ryo Aoki
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Saki Tsutsumi
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Shota Togai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Ryosuke Kobayashi
- Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma 371-8512, Japan
| | - Takuro Horii
- Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma 371-8512, Japan
| | - Izuho Hatada
- Viral Vector Core, Gunma University, Initiative for Advanced Research, Maebashi, Gunma 371-8511, Japan
- Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma 371-8512, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
- Viral Vector Core, Gunma University, Initiative for Advanced Research, Maebashi, Gunma 371-8511, Japan
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Watanave M, Kawachi M, Konno A, Aoki R, Fukai Y, Matsuzaki Y, Kaneko R, Hirai H. Protein kinase Cγ negatively regulates the intrinsic excitability in zebrin-negative cerebellar Purkinje cells. Front Cell Neurosci 2024; 18:1349878. [PMID: 38433862 PMCID: PMC10904455 DOI: 10.3389/fncel.2024.1349878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 01/30/2024] [Indexed: 03/05/2024] Open
Abstract
Protein kinase C γ (PKCγ), a neuronal isoform present exclusively in the central nervous system, is most abundantly expressed in cerebellar Purkinje cells (PCs). Targeted deletion of PKCγ causes a climbing fiber synapse elimination in developing PCs and motor deficit. However, physiological roles of PKCγ in adult mouse PCs are little understood. In this study, we aimed to unravel the roles of PKCγ in mature mouse PCs by deleting PKCγ from adult mouse PCs of PKCγfl/fl mice via cerebellar injection of adeno-associated virus (AAV) vectors expressing Cre recombinase under the control of the PC-specific L7-6 promoter. Whole cell patch-clamp recording of PCs showed higher intrinsic excitability in PCs virally lacking PKCγ [PKCγ-conditional knockout (PKCγ-cKO) PCs] than in wild-type (WT) mouse PCs in the zebrin-negative module, but not in the zebrin-positive module. AAV-mediated PKCγ re-expression in PKCγ-deficient mouse PCs in the zebrin-negative module restored the enhanced intrinsic excitability to a level comparable to that of wild-type mouse PCs. In parallel with higher intrinsic excitability, we found larger hyperpolarization-activated cyclic nucleotide-gated (HCN) channel currents in PKCγ-cKO PCs located in the zebrin-negative module, compared with those in WT mouse PCs in the same region. However, pharmacological inhibition of the HCN currents did not restore the enhanced intrinsic excitability in PKCγ-cKO PCs in the zebrin-negative module. These results suggested that PKCγ suppresses the intrinsic excitability in zebrin-negative PCs, which is likely independent of the HCN current inhibition.
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Affiliation(s)
- Masashi Watanave
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Mika Kawachi
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Ayumu Konno
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
- Viral Vector Core, Gunma University, Initiative for Advanced Research, Maebashi, Japan
| | - Ryo Aoki
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yuuki Fukai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yasunori Matsuzaki
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
- Viral Vector Core, Gunma University, Initiative for Advanced Research, Maebashi, Japan
| | - Ryosuke Kaneko
- KOKORO-Biology Group, Neuroscience Laboratories, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
- Viral Vector Core, Gunma University, Initiative for Advanced Research, Maebashi, Japan
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Tan W, Ikoma Y, Takahashi Y, Konno A, Hirai H, Hirase H, Matsui K. Anxiety control by astrocytes in the lateral habenula. Neurosci Res 2024:S0168-0102(24)00010-5. [PMID: 38311032 DOI: 10.1016/j.neures.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/17/2024] [Accepted: 01/21/2024] [Indexed: 02/06/2024]
Abstract
The potential role of astrocytes in lateral habenula (LHb) in modulating anxiety was explored in this study. The habenula are a pair of small nuclei located above the thalamus, known for their involvement in punishment avoidance and anxiety. Herein, we observed an increase in theta-band oscillations of local field potentials (LFPs) in the LHb when mice were exposed to anxiety-inducing environments. Electrical stimulation of LHb at theta-band frequency promoted anxiety-like behavior. Calcium (Ca2+) levels and pH in the cytosol of astrocytes and local brain blood volume changes were studied in mice expressing either a Ca2+ or a pH sensor protein specifically in astrocytes and mScarlet fluorescent protein in the blood plasma using fiber photometry. An acidification response to anxiety was observed. Photoactivation of archaerhopsin-T (ArchT), an optogenetic tool that acts as an outward proton pump, results in intracellular alkalinization. Photostimulation of LHb in astrocyte-specific ArchT-expressing mice resulted in dissipation of theta-band LFP oscillation in an anxiogenic environment and suppression of anxiety-like behavior. These findings provide evidence that LHb astrocytes modulate anxiety and may offer a new target for treatment of anxiety disorders.
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Affiliation(s)
- Wanqin Tan
- Super-network Brain Physiology, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577 Japan
| | - Yoko Ikoma
- Super-network Brain Physiology, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577 Japan
| | - Yusuke Takahashi
- Super-network Brain Physiology, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577 Japan; Systems Bioinformatics, Graduate School of Information Sciences, Tohoku University, Sendai 980-8579 Japan
| | - Ayumu Konno
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi 371-8511, Gunma, Japan; Viral Vector Core, Gunma University Initiative for Advanced Research, Maebashi 371-8511, Gunma, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi 371-8511, Gunma, Japan; Viral Vector Core, Gunma University Initiative for Advanced Research, Maebashi 371-8511, Gunma, Japan
| | - Hajime Hirase
- Center for Translational Neuromedicine, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark; Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Ko Matsui
- Super-network Brain Physiology, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577 Japan.
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Uggerud IM, Kråkenes T, Hirai H, Vedeler CA, Schubert M. Development and Optimization of a Multilayer Rat Purkinje Neuron Culture. Cerebellum 2024; 23:101-111. [PMID: 36626013 PMCID: PMC10864459 DOI: 10.1007/s12311-022-01510-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/28/2022] [Indexed: 01/11/2023]
Abstract
Elucidation of the mechanisms involved in neurodegenerative diseases of the cerebellum has been hampered by the lack of robust single cell models to study Purkinje neurons and replicate at the same time in vivo features. Cerebellar Purkinje neurons are difficult to grow in dispersed cell culture, and only limited work has been done using rat cells. We developed a refined protocol for growing rat Purkinje neurons from embryonic and postnatal tissue ex vivo that results in well-developed, mature, functional, and synaptically active neurons. The rat Purkinje neurons generated are responsive to paracrine factors and genetic manipulation, allowing great experimental flexibility at the single-cell level. This ex vivo model can be used to investigate disease mechanisms that disturb Purkinje neuron morphology, function, and communication in high- and low-throughput screening formats.
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Affiliation(s)
- Ida Margrethe Uggerud
- Department of Neurology, Haukeland University Hospital, 5021, Bergen, Norway
- Department of Clinical Medicine (K1), University of Bergen, 5021, Bergen, Norway
| | - Torbjørn Kråkenes
- Department of Clinical Medicine (K1), University of Bergen, 5021, Bergen, Norway
| | - Hirokazu Hirai
- Department of Neurophysiology &, Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Christian Alexander Vedeler
- Department of Neurology, Haukeland University Hospital, 5021, Bergen, Norway
- Department of Clinical Medicine (K1), University of Bergen, 5021, Bergen, Norway
- Neuro-SysMed - Centre of Excellence for Experimental Therapy in Neurology, Departments of Neurology and Clinical Medicine, 5021, Bergen, Norway
| | - Manja Schubert
- Department of Neurology, Haukeland University Hospital, 5021, Bergen, Norway.
- Institute of Anatomy, Faculty of Medicine Carl Gustav Carus, 01307, Dresden, Germany.
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Morishima M, Matsumura S, Tohyama S, Nagashima T, Konno A, Hirai H, Watabe AM. Excitatory subtypes of the lateral amygdala neurons are differentially involved in regulation of synaptic plasticity and excitation/inhibition balance in aversive learning in mice. Front Cell Neurosci 2023; 17:1292822. [PMID: 38162000 PMCID: PMC10755964 DOI: 10.3389/fncel.2023.1292822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 11/06/2023] [Indexed: 01/03/2024] Open
Abstract
The amygdala plays a crucial role in aversive learning. In Pavlovian fear conditioning, sensory information about an emotionally neutral conditioned stimulus (CS) and an innately aversive unconditioned stimulus is associated with the lateral amygdala (LA), and the CS acquires the ability to elicit conditioned responses. Aversive learning induces synaptic plasticity in LA excitatory neurons from CS pathways, such as the medial geniculate nucleus (MGN) of the thalamus. Although LA excitatory cells have traditionally been classified based on their firing patterns, the relationship between the subtypes and functional properties remains largely unknown. In this study, we classified excitatory cells into two subtypes based on whether the after-depolarized potential (ADP) amplitude is expressed in non-ADP cells and ADP cells. Their electrophysiological properties were significantly different. We examined subtype-specific synaptic plasticity in the MGN-LA pathway following aversive learning using optogenetics and found significant experience-dependent plasticity in feed-forward inhibitory responses in fear-conditioned mice compared with control mice. Following aversive learning, the inhibition/excitation (I/E) balance in ADP cells drastically changed, whereas that in non-ADP cells tended to change in the reverse direction. These results suggest that the two LA subtypes are differentially regulated in relation to synaptic plasticity and I/E balance during aversive learning.
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Affiliation(s)
- Mieko Morishima
- Institute of Clinical Medicine and Research, Research Center for Medical Sciences, The Jikei University School of Medicine, Chiba, Japan
| | - Sohta Matsumura
- Institute of Clinical Medicine and Research, Research Center for Medical Sciences, The Jikei University School of Medicine, Chiba, Japan
| | - Suguru Tohyama
- Institute of Clinical Medicine and Research, Research Center for Medical Sciences, The Jikei University School of Medicine, Chiba, Japan
| | - Takashi Nagashima
- Institute of Clinical Medicine and Research, Research Center for Medical Sciences, The Jikei University School of Medicine, Chiba, Japan
| | - Ayumu Konno
- Gunma University Graduate School of Medicine, Maebashi, Japan
- Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Japan
| | - Hirokazu Hirai
- Gunma University Graduate School of Medicine, Maebashi, Japan
- Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Japan
| | - Ayako M. Watabe
- Institute of Clinical Medicine and Research, Research Center for Medical Sciences, The Jikei University School of Medicine, Chiba, Japan
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Nagashima T, Mikami K, Tohyama S, Konno A, Hirai H, Watabe AM. State-dependent modulation of positive and negative affective valences by a parabrachial nucleus-to-ventral tegmental area pathway in mice. Front Neural Circuits 2023; 17:1273322. [PMID: 38094239 PMCID: PMC10716301 DOI: 10.3389/fncir.2023.1273322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023] Open
Abstract
Appropriately responding to various sensory signals in the environment is essential for animal survival. Accordingly, animal behaviors are closely related to external and internal states, which include the positive and negative emotional values of sensory signals triggered by environmental factors. While the lateral parabrachial nucleus (LPB) plays a key role in nociception and supports negative valences, it also transmits signals including positive valences. However, the downstream neuronal mechanisms of positive and negative valences have not been fully explored. In the present study, we investigated the ventral tegmental area (VTA) as a projection target for LPB neurons. Optogenetic activation of LPB-VTA terminals in male mice elicits positive reinforcement in an operant task and induces both avoidance and attraction in a place-conditioning task. Inhibition of glutamic acid decarboxylase (GAD) 65-expressing cells in the VTA promotes avoidance behavior induced by photoactivation of the LPB-VTA pathway. These findings indicate that the LPB-VTA pathway is one of the LPB outputs for the transmission of positive and negative valence signals, at least in part, with GABAergic modification in VTA.
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Affiliation(s)
- Takashi Nagashima
- Institute of Clinical Medicine and Research, Research Center for Medical Sciences, The Jikei University School of Medicine, Chiba, Japan
| | - Kaori Mikami
- Institute of Clinical Medicine and Research, Research Center for Medical Sciences, The Jikei University School of Medicine, Chiba, Japan
| | - Suguru Tohyama
- Institute of Clinical Medicine and Research, Research Center for Medical Sciences, The Jikei University School of Medicine, Chiba, Japan
| | - Ayumu Konno
- Gunma University Graduate School of Medicine, Maebashi, Japan
- Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Japan
| | - Hirokazu Hirai
- Gunma University Graduate School of Medicine, Maebashi, Japan
- Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Japan
| | - Ayako M. Watabe
- Institute of Clinical Medicine and Research, Research Center for Medical Sciences, The Jikei University School of Medicine, Chiba, Japan
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Murase S, Sakitani N, Maekawa T, Yoshino D, Takano K, Konno A, Hirai H, Saito T, Tanaka S, Shinohara K, Kishi T, Yoshikawa Y, Sakai T, Ayaori M, Inanami H, Tomiyasu K, Takashima A, Ogata T, Tsuchimochi H, Sato S, Saito S, Yoshino K, Matsuura Y, Funamoto K, Ochi H, Shinohara M, Nagao M, Sawada Y. Interstitial-fluid shear stresses induced by vertically oscillating head motion lower blood pressure in hypertensive rats and humans. Nat Biomed Eng 2023; 7:1350-1373. [PMID: 37414976 PMCID: PMC10651490 DOI: 10.1038/s41551-023-01061-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 05/27/2023] [Indexed: 07/08/2023]
Abstract
The mechanisms by which physical exercise benefits brain functions are not fully understood. Here, we show that vertically oscillating head motions mimicking mechanical accelerations experienced during fast walking, light jogging or treadmill running at a moderate velocity reduce the blood pressure of rats and human adults with hypertension. In hypertensive rats, shear stresses of less than 1 Pa resulting from interstitial-fluid flow induced by such passive head motions reduced the expression of the angiotensin II type-1 receptor in astrocytes in the rostral ventrolateral medulla, and the resulting antihypertensive effects were abrogated by hydrogel introduction that inhibited interstitial-fluid movement in the medulla. Our findings suggest that oscillatory mechanical interventions could be used to elicit antihypertensive effects.
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Affiliation(s)
- Shuhei Murase
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
- Department of Orthopaedic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Naoyoshi Sakitani
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
- Department of Cell Biology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Takahiro Maekawa
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Daisuke Yoshino
- Division of Advanced Applied Physics, Institute of Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan
| | - Kouji Takano
- Department of Rehabilitation for Brain Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Ayumu Konno
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Taku Saito
- Department of Orthopaedic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Sakae Tanaka
- Department of Orthopaedic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Keisuke Shinohara
- Department of Cardiovascular Medicine, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takuya Kishi
- Department of Cardiology, Graduate School of Medicine, International University of Health and Welfare, Okawa, Japan
| | - Yuki Yoshikawa
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Takamasa Sakai
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | | | - Hirohiko Inanami
- Inanami Spine & Joint Hospital/Iwai Orthopaedic Medical Hospital, Iwai Medical Foundation, Tokyo, Japan
| | - Koji Tomiyasu
- Center of Sports Science and Health Promotion, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Atsushi Takashima
- Department of Assistive Technology, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Toru Ogata
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
- Department of Rehabilitation Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hirotsugu Tsuchimochi
- Department of Cardiac Physiology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Shinya Sato
- Department of Advanced Medical Technologies, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Shigeyoshi Saito
- Department of Medical Physics and Engineering, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kohzoh Yoshino
- School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Japan
| | - Yuiko Matsuura
- Department of Health and Sports, Niigata University of Health and Welfare, Niigata, Japan
| | | | - Hiroki Ochi
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Masahiro Shinohara
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Motoshi Nagao
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Yasuhiro Sawada
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan.
- Department of Orthopaedic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
- Department of Cell Biology, National Cerebral and Cardiovascular Center, Suita, Japan.
- Division of Advanced Applied Physics, Institute of Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan.
- Department of Clinical Research, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan.
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9
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Murase S, Sakitani N, Maekawa T, Yoshino D, Takano K, Konno A, Hirai H, Saito T, Tanaka S, Shinohara K, Kishi T, Yoshikawa Y, Sakai T, Ayaori M, Inanami H, Tomiyasu K, Takashima A, Ogata T, Tsuchimochi H, Sato S, Saito S, Yoshino K, Matsuura Y, Funamoto K, Ochi H, Shinohara M, Nagao M, Sawada Y. Author Correction: Interstitial-fluid shear stresses induced by vertically oscillating head motion lower blood pressure in hypertensive rats and humans. Nat Biomed Eng 2023; 7:1530. [PMID: 37935932 PMCID: PMC10651474 DOI: 10.1038/s41551-023-01152-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Affiliation(s)
- Shuhei Murase
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
- Department of Orthopaedic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Naoyoshi Sakitani
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
- Department of Cell Biology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Takahiro Maekawa
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Daisuke Yoshino
- Division of Advanced Applied Physics, Institute of Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan
| | - Kouji Takano
- Department of Rehabilitation for Brain Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Ayumu Konno
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Taku Saito
- Department of Orthopaedic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Sakae Tanaka
- Department of Orthopaedic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Keisuke Shinohara
- Department of Cardiovascular Medicine, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takuya Kishi
- Department of Cardiology, Graduate School of Medicine, International University of Health and Welfare, Okawa, Japan
| | - Yuki Yoshikawa
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Takamasa Sakai
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
| | | | - Hirohiko Inanami
- Inanami Spine & Joint Hospital/Iwai Orthopaedic Medical Hospital, Iwai Medical Foundation, Tokyo, Japan
| | - Koji Tomiyasu
- Center of Sports Science and Health Promotion, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Atsushi Takashima
- Department of Assistive Technology, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Toru Ogata
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
- Department of Rehabilitation Medicine, Gngraduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hirotsugu Tsuchimochi
- Department of Cardiac Physiology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Shinya Sato
- Department of Advanced Medical Technologies, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Shigeyoshi Saito
- Department of Medical Physics and Engineering, Division of Health Sciences, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kohzoh Yoshino
- School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Japan
| | - Yuiko Matsuura
- Department of Health and Sports, Niigata University of Health and Welfare, Niigata, Japan
| | | | - Hiroki Ochi
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Masahiro Shinohara
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Motoshi Nagao
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan
| | - Yasuhiro Sawada
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan.
- Department of Orthopaedic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
- Department of Cell Biology, National Cerebral and Cardiovascular Center, Suita, Japan.
- Division of Advanced Applied Physics, Institute of Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan.
- Department of Clinical Research, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Japan.
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10
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Ozawa K, Nagao M, Konno A, Iwai Y, Vittani M, Kusk P, Mishima T, Hirai H, Nedergaard M, Hirase H. Astrocytic GPCR-Induced Ca 2+ Signaling Is Not Causally Related to Local Cerebral Blood Flow Changes. Int J Mol Sci 2023; 24:13590. [PMID: 37686396 PMCID: PMC10487464 DOI: 10.3390/ijms241713590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/17/2023] [Accepted: 08/27/2023] [Indexed: 09/10/2023] Open
Abstract
Activation of Gq-type G protein-coupled receptors (GPCRs) gives rise to large cytosolic Ca2+ elevations in astrocytes. Previous in vitro and in vivo studies have indicated that astrocytic Ca2+ elevations are closely associated with diameter changes in the nearby blood vessels, which astrocytes enwrap with their endfeet. However, the causal relationship between astrocytic Ca2+ elevations and blood vessel diameter changes has been questioned, as mice with diminished astrocytic Ca2+ signaling show normal sensory hyperemia. We addressed this controversy by imaging cortical vasculature while optogenetically elevating astrocyte Ca2+ in a novel transgenic mouse line, expressing Opto-Gq-type GPCR Optoα1AR (Astro-Optoα1AR) in astrocytes. Blue light illumination on the surface of the somatosensory cortex induced Ca2+ elevations in cortical astrocytes and their endfeet in mice under anesthesia. Blood vessel diameter did not change significantly with Optoα1AR-induced Ca2+ elevations in astrocytes, while it was increased by forelimb stimulation. Next, we labeled blood plasma with red fluorescence using AAV8-P3-Alb-mScarlet in Astro-Optoα1AR mice. We were able to identify arterioles that display diameter changes in superficial areas of the somatosensory cortex through the thinned skull. Photo-stimulation of astrocytes in the cortical area did not result in noticeable changes in the arteriole diameters compared with their background strain C57BL/6. Together, compelling evidence for astrocytic Gq pathway-induced vasodiameter changes was not observed. Our results support the notion that short-term (<10 s) hyperemia is not mediated by GPCR-induced astrocytic Ca2+ signaling.
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Affiliation(s)
- Katsuya Ozawa
- Laboratory for Neuron-Glia Circuitry, RIKEN Center for Brain Science, Wako 351-0106, Saitama, Japan; (K.O.)
| | - Masaki Nagao
- Center for Translational Neuromedicine, Faculty of Medical and Health Sciences, University of Copenhagen, 1172 Copenhagen, Denmark
| | - Ayumu Konno
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi 371-8511, Gunma, Japan
- Viral Vector Core, Gunma University, Initiative for Advanced Research, Maebashi 371-8511, Gunma, Japan
| | - Youichi Iwai
- Laboratory for Neuron-Glia Circuitry, RIKEN Center for Brain Science, Wako 351-0106, Saitama, Japan; (K.O.)
| | - Marta Vittani
- Center for Translational Neuromedicine, Faculty of Medical and Health Sciences, University of Copenhagen, 1172 Copenhagen, Denmark
| | - Peter Kusk
- Center for Translational Neuromedicine, Faculty of Medical and Health Sciences, University of Copenhagen, 1172 Copenhagen, Denmark
| | - Tsuneko Mishima
- Center for Translational Neuromedicine, Faculty of Medical and Health Sciences, University of Copenhagen, 1172 Copenhagen, Denmark
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi 371-8511, Gunma, Japan
- Viral Vector Core, Gunma University, Initiative for Advanced Research, Maebashi 371-8511, Gunma, Japan
| | - Maiken Nedergaard
- Center for Translational Neuromedicine, Faculty of Medical and Health Sciences, University of Copenhagen, 1172 Copenhagen, Denmark
- Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Hajime Hirase
- Center for Translational Neuromedicine, Faculty of Medical and Health Sciences, University of Copenhagen, 1172 Copenhagen, Denmark
- Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY 14642, USA
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11
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Vittani M, Knak PAG, Fukuda M, Nagao M, Wang X, Kjaerby C, Konno A, Hirai H, Nedergaard M, Hirase H. Virally induced CRISPR/Cas9-based knock-in of fluorescent albumin allows long-term visualization of cerebral circulation in infant and adult mice. bioRxiv 2023:2023.07.10.548084. [PMID: 37503027 PMCID: PMC10369863 DOI: 10.1101/2023.07.10.548084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Albumin, a protein produced by liver hepatocytes, represents the most abundant protein in blood plasma. We have previously engineered a liver-targeting adeno-associated viral vector (AAV) that expresses fluorescent protein-tagged albumin to visualize blood plasma in mice. While this approach is versatile for imaging in adult mice, transgene expression vanishes when AAV is administered in neonates due to dilution of the episomal AAV genome in the rapidly growing liver. Here, we use CRISPR/Cas9 genome editing to insert the fluorescent protein mNeonGreen (mNG) gene into the albumin (Alb) locus of hepatocytes to produce fluorescently labeled albumin (Alb-mNG). We constructed a CRISPR AAV that includes ∼1 kb homologous arms around Alb exon 14 to express Alb-mNG. Subcutaneous injection of this AAV with AAV-CMV-Cas9 in postnatal day 3 mice resulted in two-photon visualization of the cerebral cortex vasculature within ten days. The expression levels of Alb-mNG were persistent for at least three months and were so robust that vasomotion and capillary blood flow could be assessed transcranially in early postnatal mice. This knock-in approach provides powerful means for micro- and macroscopic imaging of cerebral vascular dynamics in postnatal and adult mice.
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12
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Ichinose S, Susuki Y, Hosoi N, Kaneko R, Ebihara M, Hirai H, Iwasaki H. Interaction between Teneurin-2 and microtubules via EB proteins provides a platform for GABAA receptor exocytosis. eLife 2023; 12:83276. [PMID: 37272607 DOI: 10.7554/elife.83276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 06/03/2023] [Indexed: 06/06/2023] Open
Abstract
Neurons form dense neural circuits by connecting to each other via synapses and exchange information through synaptic receptors to sustain brain activities. Excitatory postsynapses form and mature on spines composed predominantly of actin, while inhibitory synapses are formed directly on the shafts of dendrites where both actin and microtubules (MTs) are present. Thus, it is the accumulation of specific proteins that characterizes inhibitory synapses. In this study, we explored the mechanisms that enable efficient protein accumulation at inhibitory postsynapse. We found that some inhibitory synapses function to recruit the plus end of MTs. One of the synaptic organizers, Teneurin-2 (TEN2), tends to localize to such MT-rich synapses and recruits MTs to inhibitory postsynapses via interaction with MT plus-end tracking proteins EBs. This recruitment mechanism provides a platform for the exocytosis of GABAA receptors. These regulatory mechanisms could lead to a better understanding of the pathogenesis of disorders such as schizophrenia and autism, which are caused by excitatory/inhibitory (E/I) imbalances during synaptogenesis.
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Affiliation(s)
| | | | - Nobutake Hosoi
- Department of Neurophysiology and Neural Repair, Gunma University, Gunma, Japan
| | - Ryosuke Kaneko
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | | | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University, Maebashi, Japan
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13
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Kawabata H, Konno A, Matsuzaki Y, Hirai H. A blood-brain barrier-penetrating AAV2 mutant created by a brain microvasculature endothelial cell-targeted AAV2 variant. Molecular Therapy - Methods & Clinical Development 2023; 29:81-92. [PMID: 36970652 PMCID: PMC10036519 DOI: 10.1016/j.omtm.2023.02.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
Upon systemic administration, adeno-associated virus serotype 9 (AAV9) and the capsid variant PHP.eB show distinct tropism for the central nervous system (CNS), whereas AAV2 and the capsid variant BR1 transduce brain microvascular endothelial cells (BMVECs) with little transcytosis. Here, we show that a single amino acid substitution (from Q to N) in the BR1 capsid at position 587 (designated BR1N) confers a significantly higher blood-brain barrier (BBB) penetration capacity to BR1. Intravenously infused BR1N showed significantly higher CNS tropism than BR1 and AAV9. BR1 and BR1N likely use the same receptor for entry into BMVECs; however, the single amino acid substitution has profound consequences on tropism. This suggests that receptor binding alone does not determine the final outcome in vivo and that further improvements of capsids within predetermined receptor usage are feasible.
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14
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Yaguchi K, Hagihara M, Konno A, Hirai H, Yukinaga H, Miyamichi K. Dynamic modulation of pulsatile activities of oxytocin neurons in lactating wild-type mice. PLoS One 2023; 18:e0285589. [PMID: 37163565 PMCID: PMC10171594 DOI: 10.1371/journal.pone.0285589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 04/27/2023] [Indexed: 05/12/2023] Open
Abstract
Breastfeeding, which is essential for the survival of mammalian infants, is critically mediated by pulsatile secretion of the pituitary hormone oxytocin from the central oxytocin neurons located in the paraventricular and supraoptic hypothalamic nuclei of mothers. Despite its importance, the molecular and neural circuit mechanisms of the milk ejection reflex remain poorly understood, in part because a mouse model to study lactation was only recently established. In our previous study, we successfully introduced fiber photometry-based chronic imaging of the pulsatile activities of oxytocin neurons during lactation. However, the necessity of Cre recombinase-based double knock-in mice substantially compromised the use of various Cre-dependent neuroscience toolkits. To overcome this obstacle, we developed a simple Cre-free method for monitoring oxytocin neurons by an adeno-associated virus vector driving GCaMP6s under a 2.6 kb mouse oxytocin mini-promoter. Using this method, we monitored calcium ion transients of oxytocin neurons in the paraventricular nucleus in wild-type C57BL/6N and ICR mothers without genetic crossing. By combining this method with video recordings of mothers and pups, we found that the pulsatile activities of oxytocin neurons require physical mother-pup contact for the milk ejection reflex. Notably, the frequencies of photometric signals were dynamically modulated by mother-pup reunions after isolation and during natural weaning stages. Collectively, the present study illuminates the temporal dynamics of pulsatile activities of oxytocin neurons in wild-type mice and provides a tool to characterize maternal oxytocin functions.
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Affiliation(s)
- Kasane Yaguchi
- Laboratory for Comparative Connectomics, Riken Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
- Graduate School of Biostudies, Kyoto University, Kyoto, Kyoto, Japan
| | - Mitsue Hagihara
- Laboratory for Comparative Connectomics, Riken Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Ayumu Konno
- Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma, Japan
| | - Hirokazu Hirai
- Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma, Japan
| | - Hiroko Yukinaga
- Laboratory for Comparative Connectomics, Riken Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | - Kazunari Miyamichi
- Laboratory for Comparative Connectomics, Riken Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
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15
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Jin M, Matsumoto S, Ayaki T, Yamakado H, Taguchi T, Togawa N, Konno A, Hirai H, Nakajima H, Komai S, Ishida R, Chiba S, Takahashi R, Takao T, Hirotsune S. DOPAnization of tyrosine in α-synuclein by tyrosine hydroxylase leads to the formation of oligomers. Nat Commun 2022; 13:6880. [PMID: 36371400 PMCID: PMC9653393 DOI: 10.1038/s41467-022-34555-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 10/27/2022] [Indexed: 11/15/2022] Open
Abstract
Parkinson's disease is a progressive neurodegenerative disorder characterized by the preferential loss of tyrosine hydroxylase (TH)-expressing dopaminergic neurons in the substantia nigra. Although the abnormal accumulation and aggregation of α-synuclein have been implicated in the pathogenesis of Parkinson's disease, the underlying mechanisms remain largely elusive. Here, we found that TH converts Tyr136 in α-synuclein into dihydroxyphenylalanine (DOPA; Y136DOPA) through mass spectrometric analysis. Y136DOPA modification was clearly detected by a specific antibody in the dopaminergic neurons of α-synuclein-overexpressing mice as well as human α-synucleinopathies. Furthermore, dopanized α-synuclein tended to form oligomers rather than large fibril aggregates and significantly enhanced neurotoxicity. Our findings suggest that the dopanization of α-synuclein by TH may contribute to oligomer and/or seed formation causing neurodegeneration with the potential to shed light on the pathogenesis of Parkinson's disease.
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Affiliation(s)
- Mingyue Jin
- Department of Genetic Disease Research, Osaka Metropolitan University Graduate School of Medicine, Abeno-ku, Osaka 545-8585 Japan ,grid.443385.d0000 0004 1798 9548Guangxi Key Laboratory of Brain and Cognitive Neuroscience, Guilin Medical University, Guilin, Guangxi 541199 China
| | - Sakiko Matsumoto
- Department of Genetic Disease Research, Osaka Metropolitan University Graduate School of Medicine, Abeno-ku, Osaka 545-8585 Japan
| | - Takashi Ayaki
- grid.258799.80000 0004 0372 2033Department of Neurology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8507 Japan
| | - Hodaka Yamakado
- grid.258799.80000 0004 0372 2033Department of Neurology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8507 Japan
| | - Tomoyuki Taguchi
- grid.258799.80000 0004 0372 2033Department of Neurology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8507 Japan
| | - Natsuko Togawa
- grid.258799.80000 0004 0372 2033Department of Neurology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8507 Japan
| | - Ayumu Konno
- grid.256642.10000 0000 9269 4097Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511 Japan
| | - Hirokazu Hirai
- grid.256642.10000 0000 9269 4097Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511 Japan
| | - Hiroshi Nakajima
- Division of Molecular Materials Science, Osaka Metropolitan University Graduate School of Science, Sumiyoshi-ku, Osaka 558-8585 Japan
| | - Shoji Komai
- grid.260493.a0000 0000 9227 2257Department of Science and Technology, Nara Institute of Science Technology, Ikoma, Nara 630-0192 Japan
| | - Ryuichi Ishida
- Department of Genetic Disease Research, Osaka Metropolitan University Graduate School of Medicine, Abeno-ku, Osaka 545-8585 Japan
| | - Syuhei Chiba
- Department of Genetic Disease Research, Osaka Metropolitan University Graduate School of Medicine, Abeno-ku, Osaka 545-8585 Japan
| | - Ryosuke Takahashi
- grid.258799.80000 0004 0372 2033Department of Neurology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8507 Japan
| | - Toshifumi Takao
- grid.136593.b0000 0004 0373 3971Laboratory of Protein Profiling and Functional Proteomics, Osaka University Institute for Protein Research, Suita, Osaka 565-0871 Japan
| | - Shinji Hirotsune
- Department of Genetic Disease Research, Osaka Metropolitan University Graduate School of Medicine, Abeno-ku, Osaka 545-8585 Japan
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16
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Jin M, Matsumoto S, Ayaki T, Yamakado H, Taguchi T, Togawa N, Konno A, Hirai H, Nakajima H, Komai S, Ishida R, Chiba S, Takahashi R, Takao T, Hirotsune S. DOPAnization of tyrosine in α-synuclein by tyrosine hydroxylase leads to the formation of oligomers. Nat Commun 2022. [PMID: 36371400 DOI: 10.1038/s41467-022-34555-4.pmid:36371400;pmcid:pmc9653393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023] Open
Abstract
Parkinson's disease is a progressive neurodegenerative disorder characterized by the preferential loss of tyrosine hydroxylase (TH)-expressing dopaminergic neurons in the substantia nigra. Although the abnormal accumulation and aggregation of α-synuclein have been implicated in the pathogenesis of Parkinson's disease, the underlying mechanisms remain largely elusive. Here, we found that TH converts Tyr136 in α-synuclein into dihydroxyphenylalanine (DOPA; Y136DOPA) through mass spectrometric analysis. Y136DOPA modification was clearly detected by a specific antibody in the dopaminergic neurons of α-synuclein-overexpressing mice as well as human α-synucleinopathies. Furthermore, dopanized α-synuclein tended to form oligomers rather than large fibril aggregates and significantly enhanced neurotoxicity. Our findings suggest that the dopanization of α-synuclein by TH may contribute to oligomer and/or seed formation causing neurodegeneration with the potential to shed light on the pathogenesis of Parkinson's disease.
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Affiliation(s)
- Mingyue Jin
- Department of Genetic Disease Research, Osaka Metropolitan University Graduate School of Medicine, Abeno-ku, Osaka, 545-8585, Japan
- Guangxi Key Laboratory of Brain and Cognitive Neuroscience, Guilin Medical University, Guilin, Guangxi, 541199, China
| | - Sakiko Matsumoto
- Department of Genetic Disease Research, Osaka Metropolitan University Graduate School of Medicine, Abeno-ku, Osaka, 545-8585, Japan
| | - Takashi Ayaki
- Department of Neurology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Hodaka Yamakado
- Department of Neurology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Tomoyuki Taguchi
- Department of Neurology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Natsuko Togawa
- Department of Neurology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Ayumu Konno
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Hiroshi Nakajima
- Division of Molecular Materials Science, Osaka Metropolitan University Graduate School of Science, Sumiyoshi-ku, Osaka, 558-8585, Japan
| | - Shoji Komai
- Department of Science and Technology, Nara Institute of Science Technology, Ikoma, Nara, 630-0192, Japan
| | - Ryuichi Ishida
- Department of Genetic Disease Research, Osaka Metropolitan University Graduate School of Medicine, Abeno-ku, Osaka, 545-8585, Japan
| | - Syuhei Chiba
- Department of Genetic Disease Research, Osaka Metropolitan University Graduate School of Medicine, Abeno-ku, Osaka, 545-8585, Japan
| | - Ryosuke Takahashi
- Department of Neurology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Toshifumi Takao
- Laboratory of Protein Profiling and Functional Proteomics, Osaka University Institute for Protein Research, Suita, Osaka, 565-0871, Japan
| | - Shinji Hirotsune
- Department of Genetic Disease Research, Osaka Metropolitan University Graduate School of Medicine, Abeno-ku, Osaka, 545-8585, Japan.
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17
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Okada Y, Hosoi N, Matsuzaki Y, Fukai Y, Hiraga A, Nakai J, Nitta K, Shinohara Y, Konno A, Hirai H. Development of microglia-targeting adeno-associated viral vectors as tools to study microglial behavior in vivo. Commun Biol 2022; 5:1224. [DOI: 10.1038/s42003-022-04200-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 10/31/2022] [Indexed: 11/13/2022] Open
Abstract
AbstractHere we describe the microglia-targeting adeno-associated viral (AAV) vectors containing a 1.7-kb putative promoter region of microglia/macrophage-specific ionized calcium-binding adaptor molecule 1 (Iba1), along with repeated miRNA target sites for microRNA (miR)-9 and miR-129-2-3p. The 1.7-kb genomic sequence upstream of the start codon in exon 1 of the Iba1 (Aif1) gene, functions as microglia preferential promoter in the striatum and cerebellum. Furthermore, ectopic transgene expression in non-microglial cells is markedly suppressed upon adding two sets of 4-repeated miRNA target sites for miR-9 and miR-129-2-3p, which are expressed exclusively in non-microglial cells and sponged AAV-derived mRNAs. Our vectors transduced ramified microglia in healthy tissues and reactive microglia in lipopolysaccharide-treated mice and a mouse model of neurodegenerative disease. Moreover, live fluorescent imaging allowed the monitoring of microglial motility and intracellular Ca2+ mobilization. Thus, microglia-targeting AAV vectors are valuable for studying microglial pathophysiology and therapies, particularly in the striatum and cerebellum.
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18
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Wang X, Delle C, Asiminas A, Akther S, Vittani M, Brøgger P, Kusk P, Vo CT, Radovanovic T, Konno A, Hirai H, Fukuda M, Weikop P, Goldman SA, Nedergaard M, Hirase H. Liver-secreted fluorescent blood plasma markers enable chronic imaging of the microcirculation. Cell Rep Methods 2022; 2:100302. [PMID: 36313804 PMCID: PMC9606131 DOI: 10.1016/j.crmeth.2022.100302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 08/11/2022] [Accepted: 09/01/2022] [Indexed: 12/25/2022]
Abstract
Studying blood microcirculation is vital for gaining insights into vascular diseases. Blood flow imaging in deep tissue is currently achieved by acute administration of fluorescent dyes in the blood plasma. This is an invasive process, and the plasma fluorescence decreases within an hour of administration. Here, we report an approach for the longitudinal study of vasculature. Using a single intraperitoneal or intravenous administration of viral vectors, we express fluorescent secretory albumin-fusion proteins in the liver to chronically label the blood circulation in mice. This approach allows for longitudinal observation of circulation from 2 weeks to over 4 months after vector administration. We demonstrate the chronic assessment of vascular functions including functional hyperemia and vascular plasticity in micro- and mesoscopic scales. This genetic plasma labeling approach represents a versatile and cost-effective method for the chronic investigation of vasculature functions across the body in health and disease animal models.
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Affiliation(s)
- Xiaowen Wang
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Christine Delle
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Antonis Asiminas
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Sonam Akther
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marta Vittani
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Peter Brøgger
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Peter Kusk
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Camilla Trang Vo
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Tessa Radovanovic
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ayumu Konno
- Viral Vector Core, Gunma University Initiative for Advanced Research, Maebashi, Gunma 371-8511, Japan
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Hirokazu Hirai
- Viral Vector Core, Gunma University Initiative for Advanced Research, Maebashi, Gunma 371-8511, Japan
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Masahiro Fukuda
- Program in Neuroscience and Behavioral Disorders, Duke-NUS Medical School, Singapore 169857, Singapore
- International Research Center for Medical Sciences (IRCMS), Kumamoto University, Kumamoto, Japan
| | - Pia Weikop
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Steven A. Goldman
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
- Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Maiken Nedergaard
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
- Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Hajime Hirase
- Center for Translational Neuromedicine, Faculty of Health and Life Sciences, University of Copenhagen, Copenhagen, Denmark
- Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, NY, USA
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19
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Hirai H, Fukai Y, Konno A, Hosoi N. Electrophysiological and Imaging Analysis of GFP-Tagged Protein Kinase C γ Translocation in Cerebellar Purkinje Cells. Cerebellum 2022; 21:776-783. [PMID: 35218526 DOI: 10.1007/s12311-022-01384-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
The cerebellum contains the highest density of protein kinase C (PKC) in the central nervous system. PKCγ, the major isotype accounting for over half of the PKCs in the cerebellum, is expressed exclusively in Purkinje cells (PCs). Inactivated PKCγ, which is localized in the cytoplasm of PC dendrites and soma, begins to translocate to the cell membrane upon activation. However, the physiological conditions that induce PKCγ translocation in PC remain largely unknown. Here, we virally expressed PKCγ-GFP in PCs and examined the conditions that induced its translocation to PC dendrites by whole-cell patch clamp analysis combined with confocal GFP fluorescence imaging. A single or repetitive (150 pulses at 5 Hz for 30 s) electrical stimulation to a climbing fiber (CF), which produced a complex spike(s) in PC, failed to induce translocation of PKCγ-GFP to the dendritic shaft of PCs. Direct current injection (+ 2 nA for 3 s) to PC also did not induce the translocation, although PCs generated simple spikes continuously at high rates. In contrast, high-frequency parallel fiber (PF) stimulation (50 pulses at 50 Hz for 1 s), which triggered action potentials followed by sustained depolarization (known as mGluR1-mediated slow depolarization), caused translocation of cytoplasmic PKCγ-GFP to the membrane. Low-frequency PF stimulation (150 pulses at 5 Hz for 30 s) induced continuous simple spike firing but did not induce translocation. These results suggest that CF-triggered depolarization, which causes Ca2+ influx through voltage-gated Ca2+ channels throughout PC dendrites and somas, is insufficient to induce the translocation of PKCγ, instead requiring high-frequency PF stimulation that activates mGluR1.
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Affiliation(s)
- Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan.
- Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma, 371-8511, Japan.
| | - Yuuki Fukai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Ayumu Konno
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
- Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma, 371-8511, Japan
| | - Nobutake Hosoi
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
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20
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Hirai H, Xu J, Zhao Y. 605 Beneficial effects of SGLT1/2 dual inhibitor phloridzin on human induced pluripotent stem cell–derived lung organoids of cystic fibrosis Class I mutations. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)01295-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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21
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Sootome H, Muraoka H, Aoyagi Y, Kato M, Hirai H. Covalent FGFR inhibitor futibatinib exhibits sustained antitumor effects compared with ATP-competitive inhibitors by being less prone to ontarget resistance. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01005-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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22
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Muro K, Kato K, Chin K, Nishino K, Satouchi M, Watanabe Y, Kawakami H, Tsushima T, Hirai H, Chisamore M, Kojima T. 1241P Phase Ib study of futibatinib plus pembrolizumab in patients with advanced or metastatic solid tumors: Tolerability results and antitumor activity in esophageal carcinoma. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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23
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Inada K, Hagihara M, Tsujimoto K, Abe T, Konno A, Hirai H, Kiyonari H, Miyamichi K. Plasticity of neural connections underlying oxytocin-mediated parental behaviors of male mice. Neuron 2022; 110:2009-2023.e5. [PMID: 35443152 DOI: 10.1016/j.neuron.2022.03.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 03/04/2022] [Accepted: 03/28/2022] [Indexed: 11/15/2022]
Abstract
The adult brain can flexibly adapt behaviors to specific life-stage demands. For example, while sexually naive male mice are aggressive to the conspecific young, they start to provide caregiving to infants around the time when their own young are expected. How such behavioral plasticity is implemented at the level of neural connections remains poorly understood. Here, using viral-genetic approaches, we establish hypothalamic oxytocin neurons as the key regulators of the parental caregiving behaviors of male mice. We then use rabies-virus-mediated unbiased screening to identify excitatory neural connections originating from the lateral hypothalamus to the oxytocin neurons to be drastically strengthened when male mice become fathers. These connections are functionally relevant, as their activation suppresses pup-directed aggression in virgin males. These results demonstrate the life-stage associated, long-distance, and cell-type-specific plasticity of neural connections in the hypothalamus, the brain region that is classically assumed to be hard-wired.
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Affiliation(s)
- Kengo Inada
- Laboratory for Comparative Connectomics, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan.
| | - Mitsue Hagihara
- Laboratory for Comparative Connectomics, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Kazuko Tsujimoto
- Laboratory for Comparative Connectomics, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Takaya Abe
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Ayumu Konno
- Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan; Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma 371-8511, Japan
| | - Hirokazu Hirai
- Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan; Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma 371-8511, Japan
| | - Hiroshi Kiyonari
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Kazunari Miyamichi
- Laboratory for Comparative Connectomics, RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan; Japan Science and Technology Agency, PRESTO, Kawaguchi, Saitama 332-0012, Japan.
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24
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Sakai A, Yasui T, Watanave M, Tatsumi R, Yamamoto Y, Takano W, Tani Y, Okamura I, Hirai H, Takeda S. Development of novel potent ligands for GPR85, an orphan G protein-coupled receptor expressed in the brain. Genes Cells 2022; 27:345-355. [PMID: 35194900 DOI: 10.1111/gtc.12931] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 11/28/2022]
Abstract
GPR85 is a member of the G protein-coupled receptor and is a super-conserved receptor expressed in the brain sub-family (Super Conserved Receptor Expressed in Brain; SREB) with GPR27 and GPR173. These three receptors are "orphan receptors"; however, their endogenous ligands have not been identified. SREB has garnered the interest of many scientists because it is expressed in the central nervous system and is evolutionarily conserved. In particular, brain mass is reported to be increased and learning and memory are improved in GPR85 knockout mice (Matsumoto et al. 2008). In this study, we characterized newly synthesized compounds using a GPR85-Gsα fusion protein and the [35 S]GTPγS binding assay and identified novel GPR85 inverse-agonists with IC50 values of approximately 1 μM. To analyze the neurochemical character of the compounds and investigate the physiological significance of GPR85, we used cerebellar Purkinje cells expressing GPR85 and an electrophysiological technique. Based on the results, the inverse-agonist compound for GPR85 modulated potassium channel opening. Together with the results of previous gene analysis of GPR85, we expect that the development of the GPR85 ligand will provide new insights into a few types of neurological disorders.
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Affiliation(s)
- Aya Sakai
- Graduate of School of Science and Technology, Division of Molecular Science, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma, Japan
| | - Takeshi Yasui
- Graduate of School of Pharmaceutical Sciences, Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, Japan
| | - Masashi Watanave
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, Japan
| | - Rine Tatsumi
- Graduate of School of Pharmaceutical Sciences, Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, Japan
| | - Yoshihiko Yamamoto
- Graduate of School of Pharmaceutical Sciences, Department of Basic Medicinal Sciences, Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, Japan
| | - Wataru Takano
- Graduate of School of Science and Technology, Division of Molecular Science, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma, Japan
| | - Yuki Tani
- Graduate of School of Science and Technology, Division of Molecular Science, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma, Japan
| | - Izumi Okamura
- Graduate of School of Science and Technology, Division of Molecular Science, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, Japan
| | - Shigeki Takeda
- Graduate of School of Science and Technology, Division of Molecular Science, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma, Japan
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25
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Suzuki A, Kosugi S, Murayama E, Sasakawa E, Ohkawa N, Konno A, Hirai H, Inokuchi K. A cortical cell ensemble in the posterior parietal cortex controls past experience-dependent memory updating. Nat Commun 2022; 13:41. [PMID: 35017495 PMCID: PMC8752845 DOI: 10.1038/s41467-021-27763-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 12/07/2021] [Indexed: 11/13/2022] Open
Abstract
When processing current sensory inputs, animals refer to related past experiences. Current information is then incorporated into the related neural network to update previously stored memories. However, the neuronal mechanism underlying the impact of memories of prior experiences on current learning is not well understood. Here, we found that a cellular ensemble in the posterior parietal cortex (PPC) that is activated during past experience mediates an interaction between past and current information to update memory through a PPC-anterior cingulate cortex circuit in mice. Moreover, optogenetic silencing of the PPC ensemble immediately after retrieval dissociated the interaction without affecting individual memories stored in the hippocampus and amygdala. Thus, a specific subpopulation of PPC cells represents past information and instructs downstream brain regions to update previous memories. Animals refer to related past experiences when processing sensory inputs. The authors show that a cellular ensemble in the posterior parietal cortex that is activated during past experience mediates an interaction between past and current information to update memory through a circuit including the anterior cingulate cortex.
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Affiliation(s)
- Akinobu Suzuki
- Department of Biochemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.,CREST, JST, University of Toyama, Toyama, 930-0194, Japan.,Research Center for Idling Brain Science, University of Toyama, Toyama, 930-0194, Japan
| | - Sakurako Kosugi
- Department of Biochemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.,CREST, JST, University of Toyama, Toyama, 930-0194, Japan
| | - Emi Murayama
- Department of Biochemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.,CREST, JST, University of Toyama, Toyama, 930-0194, Japan.,Research Center for Idling Brain Science, University of Toyama, Toyama, 930-0194, Japan
| | - Eri Sasakawa
- Department of Biochemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Noriaki Ohkawa
- Department of Biochemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.,CREST, JST, University of Toyama, Toyama, 930-0194, Japan.,PRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan.,Division for Memory and Cognitive Function, Research Center for Advanced Medical Science, Comprehensive Research Facilities for Advanced Medical Science, Dokkyo Medical University, Tochigi, 321-0293, Japan
| | - Ayumu Konno
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Kaoru Inokuchi
- Department of Biochemistry, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan. .,CREST, JST, University of Toyama, Toyama, 930-0194, Japan. .,Research Center for Idling Brain Science, University of Toyama, Toyama, 930-0194, Japan.
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26
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Ninomiya A, Mshaty A, Haijima A, Yajima H, Kokubo M, Khairinisa MA, Ariyani W, Fujiwara Y, Ishii S, Hosoi N, Hirai H, Amano I, Koibuchi N. The neurotoxic effect of lactational PFOS exposure on cerebellar functional development in male mice. Food Chem Toxicol 2021; 159:112751. [PMID: 34871666 DOI: 10.1016/j.fct.2021.112751] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/15/2021] [Accepted: 12/01/2021] [Indexed: 01/09/2023]
Abstract
Recent studies showed a possible association between perfluorooctane sulfonate (PFOS) and developmental disabilities. We previously found the specific effects of PFOS exposure on learning and memory, however, its effect on the other developmental disabilities such as motor and social deficits remains unclear. We examined the effect of early lactational PFOS exposure on motor coordination, social activity, and anxiety in male mice. We orally administered a PFOS solution to dams from postnatal day 1-14. At 10 weeks old, we conducted a behavior test battery to evaluate motor performance, social activity, and anxiety, followed by electrophysiology and Western blot analysis. PFOS-exposed mice displayed impaired motor coordination. Whole-cell patch-clamp recordings from Purkinje cells revealed that the short-term and long-term plasticity at parallel fiber-Purkinje cell synapses are affected by PFOS exposure. Western blot analysis indicated that PFOS exposure increased syntaxin binding protein 1 (Munc18-1) and glutamate metabotropic receptor 1 (mGluR1) protein levels, which may be associated with the change in neurotransmitter release from parallel fibers and the level of long-term depression, respectively. The present study demonstrates that lactational PFOS exposure may have disrupted the pre- and postsynaptic plasticity at parallel fiber-Purkinje cell synapses, causing profound, long-lasting abnormal effects on the cerebellar function.
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Affiliation(s)
- Ayane Ninomiya
- Department of Integrative Physiology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan
| | - Abdallah Mshaty
- Department of Integrative Physiology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan
| | - Asahi Haijima
- Department of Integrative Physiology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan; Laboratory for Environmental Brain Science, Faculty of Human Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama, 359-1192, Japan
| | - Hiroyuki Yajima
- Department of Integrative Physiology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan
| | - Michifumi Kokubo
- Department of Integrative Physiology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan
| | - Miski Aghnia Khairinisa
- Department of Integrative Physiology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan; Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Jl. Raya Bandung Sumedang KM.21, Hegarmanah, Jatinangor, Sumedang, West Java, 45363, Indonesia
| | - Winda Ariyani
- Department of Integrative Physiology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan
| | - Yuki Fujiwara
- Department of Integrative Physiology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan
| | - Sumiyasu Ishii
- Department of Integrative Physiology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan
| | - Nobutake Hosoi
- Department of Neurophysiology and Neural Repair, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan
| | - Izuki Amano
- Department of Integrative Physiology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan.
| | - Noriyuki Koibuchi
- Department of Integrative Physiology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-machi, Maebashi, 371-8511, Japan.
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27
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Horinouchi A, Hirai H, Hirano R, Kurihara S, Takagi H, Matsumoto K. Intestinal immunomodulatory activity of indigestible glucan in mice and its utilization by intestinal bacteria in vitro. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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28
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Kuboki Y, Shitara K, Morizane C, Kojima T, Yoh K, Sakai D, Tahara M, Hirai H, Kurokawa Y, Kato T, Doi T. 1383P Phase I study of the irreversible FGFR inhibitor futibatinib in Japanese patients with advanced solid tumors: Updated dose expansion results and activity in gastric cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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29
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Cendelin J, Cvetanovic M, Gandelman M, Hirai H, Orr HT, Pulst SM, Strupp M, Tichanek F, Tuma J, Manto M. Consensus Paper: Strengths and Weaknesses of Animal Models of Spinocerebellar Ataxias and Their Clinical Implications. Cerebellum 2021; 21:452-481. [PMID: 34378174 DOI: 10.1007/s12311-021-01311-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/21/2021] [Indexed: 01/02/2023]
Abstract
Spinocerebellar ataxias (SCAs) represent a large group of hereditary degenerative diseases of the nervous system, in particular the cerebellum, and other systems that manifest with a variety of progressive motor, cognitive, and behavioral deficits with the leading symptom of cerebellar ataxia. SCAs often lead to severe impairments of the patient's functioning, quality of life, and life expectancy. For SCAs, there are no proven effective pharmacotherapies that improve the symptoms or substantially delay disease progress, i.e., disease-modifying therapies. To study SCA pathogenesis and potential therapies, animal models have been widely used and are an essential part of pre-clinical research. They mainly include mice, but also other vertebrates and invertebrates. Each animal model has its strengths and weaknesses arising from model animal species, type of genetic manipulation, and similarity to human diseases. The types of murine and non-murine models of SCAs, their contribution to the investigation of SCA pathogenesis, pathological phenotype, and therapeutic approaches including their advantages and disadvantages are reviewed in this paper. There is a consensus among the panel of experts that (1) animal models represent valuable tools to improve our understanding of SCAs and discover and assess novel therapies for this group of neurological disorders characterized by diverse mechanisms and differential degenerative progressions, (2) thorough phenotypic assessment of individual animal models is required for studies addressing therapeutic approaches, (3) comparative studies are needed to bring pre-clinical research closer to clinical trials, and (4) mouse models complement cellular and invertebrate models which remain limited in terms of clinical translation for complex neurological disorders such as SCAs.
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Affiliation(s)
- Jan Cendelin
- Department of Pathophysiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 75, 323 00, Plzen, Czech Republic. .,Laboratory of Neurodegenerative Disorders, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 75, 323 00, Plzen, Czech Republic.
| | - Marija Cvetanovic
- Department of Neuroscience, Institute for Translational Neuroscience, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Mandi Gandelman
- Department of Neurology, University of Utah, 175 North Medical Drive East, Salt Lake City, UT, 84132, USA
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22, Gunma, 371-8511, Japan.,Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Gunma, 371-8511, Japan
| | - Harry T Orr
- Department of Laboratory Medicine and Pathology, Institute for Translational Neuroscience, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Stefan M Pulst
- Department of Neurology, University of Utah, 175 North Medical Drive East, Salt Lake City, UT, 84132, USA
| | - Michael Strupp
- Department of Neurology and German Center for Vertigo and Balance Disorders, Hospital of the Ludwig-Maximilians University, Munich, Campus Grosshadern, Marchioninistr. 15, 81377, Munich, Germany
| | - Filip Tichanek
- Department of Pathophysiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 75, 323 00, Plzen, Czech Republic.,Laboratory of Neurodegenerative Disorders, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 75, 323 00, Plzen, Czech Republic
| | - Jan Tuma
- Department of Pathophysiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 75, 323 00, Plzen, Czech Republic.,The Department of Cellular and Integrative Physiology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, MC 7843, San Antonio, TX, 78229, USA
| | - Mario Manto
- Unité des Ataxies Cérébelleuses, Service de Neurologie, CHU-Charleroi, Charleroi, Belgium.,Service des Neurosciences, Université de Mons, UMons, Mons, Belgium
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30
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Kawakami R, Matsui M, Konno A, Kaneko R, Shrestha S, Shrestha S, Sunaga H, Hanaoka H, Goto S, Hosojima M, Kabasawa H, Obokata M, Koitabashi N, Matsui H, Sasaki T, Saito A, Yanagita M, Hirai H, Kurabayashi M, Iso T. Urinary FABP1 is a biomarker for impaired proximal tubular protein reabsorption and is synergistically enhanced by concurrent liver injury. J Pathol 2021; 255:362-373. [PMID: 34370295 PMCID: PMC9292749 DOI: 10.1002/path.5775] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/28/2021] [Accepted: 08/04/2021] [Indexed: 11/09/2022]
Abstract
Urinary fatty acid binding protein 1 (FABP1, also known as liver‐type FABP) has been implicated as a biomarker of acute kidney injury (AKI) in humans. However, the precise biological mechanisms underlying its elevation remain elusive. Here, we show that urinary FABP1 primarily reflects impaired protein reabsorption in proximal tubule epithelial cells (PTECs). Bilateral nephrectomy resulted in a marked increase in serum FABP1 levels, suggesting that the kidney is an essential organ for removing serum FABP1. Injected recombinant FABP1 was filtered through the glomeruli and robustly reabsorbed via the apical membrane of PTECs. Urinary FABP1 was significantly elevated in mice devoid of megalin, a giant endocytic receptor for protein reabsorption. Elevation of urinary FABP1 was also observed in patients with Dent disease, a rare genetic disease characterized by defective megalin function in PTECs. Urinary FABP1 levels were exponentially increased following acetaminophen overdose, with both nephrotoxicity and hepatotoxicity observed. FABP1‐deficient mice with liver‐specific overexpression of FABP1 showed a massive increase in urinary FABP1 levels upon acetaminophen injection, indicating that urinary FABP1 is liver‐derived. Lastly, we employed transgenic mice expressing diphtheria toxin receptor (DT‐R) either in a hepatocyte‐ or in a PTEC‐specific manner, or both. Upon administration of diphtheria toxin (DT), massive excretion of urinary FABP1 was induced in mice with both kidney and liver injury, while mice with either injury type showed marginal excretion. Collectively, our data demonstrated that intact PTECs have a considerable capacity to reabsorb liver‐derived FABP1 through a megalin‐mediated mechanism. Thus, urinary FABP1, which is synergistically enhanced by concurrent liver injury, is a biomarker for impaired protein reabsorption in AKI. These findings address the use of urinary FABP1 as a biomarker of histologically injured PTECs that secrete FABP1 into primary urine, and suggest the use of this biomarker to simultaneously monitor impaired tubular reabsorption and liver function. © 2021 The Authors. The Journal of Pathology published by John Wiley & Sons, Ltd. on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Ryo Kawakami
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Miki Matsui
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Ayumu Konno
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan.,Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Japan
| | - Ryosuke Kaneko
- Bioresource Center, Gunma University Graduate School of Medicine, Maebashi, Japan.,KOKORO-Biology Group, Laboratories for Integrated Biology, Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Shreya Shrestha
- Department of Nephrology and Rheumatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Suman Shrestha
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hiroaki Sunaga
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan.,Center for Liberal Arts and Sciences, Ashikaga University, Ashikaga, Japan
| | - Hirofumi Hanaoka
- Department of Bioimaging Information Analysis, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Sawako Goto
- Department of Applied Molecular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Michihiro Hosojima
- Department of Clinical Nutrition Science, Kidney Research Center, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Hideyuki Kabasawa
- Department of Clinical Nutrition Science, Kidney Research Center, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masaru Obokata
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Norimichi Koitabashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hiroki Matsui
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi, Japan
| | - Tsutomu Sasaki
- Laboratory of Nutrition Chemistry, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Akihiko Saito
- Department of Applied Molecular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Motoko Yanagita
- Department of Nephrology, Graduate School of Medicine, Kyoto, Japan.,Institute for the Advanced Study of Human Biology (ASHBi), Kyoto University, Kyoto, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan.,Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Japan
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Tatsuya Iso
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan.,Department of Medical Technology and Clinical Engineering, Faculty of Medical Technology and Clinical Engineering, Gunma University of Health and Welfare, Maebashi, Japan
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Ohta T, Morikawa Y, Sato M, Konno A, Hirai H, Kurauchi Y, Hisatsune A, Katsuki H, Seki T. Therapeutic potential of d-cysteine against in vitro and in vivo models of spinocerebellar ataxia. Exp Neurol 2021; 343:113791. [PMID: 34157318 DOI: 10.1016/j.expneurol.2021.113791] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/22/2021] [Accepted: 06/17/2021] [Indexed: 12/14/2022]
Abstract
Spinocerebellar ataxia (SCA) is a group of autosomal-dominantly inherited ataxia and is classified into SCA1-48 by the difference of causal genes. Several SCA-causing proteins commonly impair dendritic development in primary cultured Purkinje cells (PCs). We assume that primary cultured PCs expressing SCA-causing proteins are available as in vitro SCA models and that chemicals that improve the impaired dendritic development would be effective for various SCAs. We have recently revealed that D-cysteine enhances the dendritic growth of primary cultured PCs via hydrogen sulfide production. In the present study, we first investigated whether D-cysteine is effective for in vitro SCA models. We expressed SCA1-, SCA3-, and SCA21-causing mutant proteins to primary cultured PCs using adeno-associated viral serotype 9 (AAV9) vectors. D-Cysteine (0.2 mM) significantly ameliorated the impaired dendritic development commonly observed in primary cultured PCs expressing these three SCA-causing proteins. Next, we investigated the therapeutic effect of long-term treatment with D-cysteine on an in vivo SCA model. SCA1 model mice were established by the cerebellar injection of AAV9 vectors, which express SCA1-causing mutant ataxin-1, to ICR mice. Long-term treatment with D-cysteine (100 mg/kg/day) significantly inhibited the progression of motor dysfunction in SCA1 model mice. Immunostaining experiments revealed that D-cysteine prevented the reduction of mGluR1 and glial activation at the early stage after the onset of motor dysfunction in SCA1 model mice. These findings strongly suggest that D-cysteine has therapeutic potential against in vitro and in vivo SCA models and may be a novel therapeutic agent for various SCAs.
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Affiliation(s)
- Tomoko Ohta
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yuri Morikawa
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Masahiro Sato
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan; Laboratory for Mechanistic Chemistry of Biomolecules, Department of Chemistry, Keio University, Yokohama, Japan
| | - Ayumu Konno
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yuki Kurauchi
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Akinori Hisatsune
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hiroshi Katsuki
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takahiro Seki
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
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Nagao S, Hirai H, Kano M, Yuzaki M. Masao Ito-A Visionary Neuroscientist with a Passion for the Cerebellum. Neuroscience 2021; 462:1-3. [PMID: 33892899 DOI: 10.1016/j.neuroscience.2021.02.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Soichi Nagao
- Laboratory for Integrative Brain Function, Nozomi Hospital, Saitama 362-0806, Japan; Laboratory for Memory Neuroscience, Tokyo Metropolitan Institute for Gerontology, Tokyo 173-0015, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Gunma 371-8511, Japan
| | - Masanobu Kano
- Depertment of Neurophysiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan; International Research Center for Neurointelligence (IRCN), The University of Tokyo Institutes for Advanced Study (UTIAS), The University of Tokyo, Tokyo 113-0033, Japan
| | - Michisuke Yuzaki
- Department of Neurophysiology, Keio University School of Medicine, Tokyo 160-8582, Japan
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Radhiyanti PT, Konno A, Matsuzaki Y, Hirai H. Comparative study of neuron-specific promoters in mouse brain transduced by intravenously administered AAV-PHP.eB. Neurosci Lett 2021; 756:135956. [PMID: 33989730 DOI: 10.1016/j.neulet.2021.135956] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 05/07/2021] [Accepted: 05/09/2021] [Indexed: 12/30/2022]
Abstract
Adeno-associated virus (AAV)- PHP.B and AAV-PHP.eB (PHP.eB), a capsid variant of AAV serotype 9, efficiently penetrates the mouse blood-brain barrier and predominantly infects neurons. Thus, the PHP.B / PHP.eB capsid and a neuron-specific promoter is a reasonable combination for effective neuronal transduction. However, the transduction characteristics of intravenously administered PHP.B / PHP.eB carrying different neuron-specific promoters have not been studied systematically. In this study, using an intravenous infusion of PHP.eB in mice, we performed a comparative study of the ubiquitous CBh and three neuron-specific promoters, the Ca2+/calmodulin-dependent kinase subunit α (CaMKII) promoter, neuron-specific enolase (NSE) promoter, and synapsin I with a minimal CMV sequence (SynI-minCMV) promoter. Expression levels of a transgene by three neuron-specific promoters were comparable to or higher than those of the CBh promoter. Among the promoters examined, the NSE promoter showed the highest transgene expression. All neuron-specific promoters were activated specifically in the neurons. PHP.eB carrying the CaMKII promoter, which is generally believed to exert its function exclusively in the excitatory neurons, transduced both the excitatory and inhibitory neurons without bias, whereas PHP.eB with the NSE and SynI-minCMV promoters transduced neurons with significant bias toward inhibitory neurons. These results are useful in neuron-targeted broad transgene expression through systemic infusion of blood-brain-barrier-penetrating AAV vectors carrying the neuron-specific promoter.
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Affiliation(s)
- Putri T Radhiyanti
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22, Gunma, 371-8511, Japan; Department of Biomedical Science, Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia
| | - Ayumu Konno
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22, Gunma, 371-8511, Japan; Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Gunma, 371-8511, Japan
| | - Yasunori Matsuzaki
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22, Gunma, 371-8511, Japan; Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Gunma, 371-8511, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22, Gunma, 371-8511, Japan; Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Gunma, 371-8511, Japan.
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Sugimoto H, Horii T, Hirota JN, Sano Y, Shinoda Y, Konno A, Hirai H, Ishizaki Y, Hirase H, Hatada I, Furuichi T, Sadakata T. The Ser19Stop single nucleotide polymorphism (SNP) of human PHYHIPL affects the cerebellum in mice. Mol Brain 2021; 14:52. [PMID: 33712038 PMCID: PMC7953787 DOI: 10.1186/s13041-021-00766-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/03/2021] [Indexed: 11/12/2022] Open
Abstract
The HapMap Project is a major international research effort to construct a resource to facilitate the discovery of relationships between human genetic variations and health and disease. The Ser19Stop single nucleotide polymorphism (SNP) of human phytanoyl-CoA hydroxylase-interacting protein-like (PHYHIPL) gene was detected in HapMap project and registered in the dbSNP. PHYHIPL gene expression is altered in global ischemia and glioblastoma multiforme. However, the function of PHYHIPL is unknown. We generated PHYHIPL Ser19Stop knock-in mice and found that PHYHIPL impacts the morphology of cerebellar Purkinje cells (PCs), the innervation of climbing fibers to PCs, the inhibitory inputs to PCs from molecular layer interneurons, and motor learning ability. Thus, the Ser19Stop SNP of the PHYHIPL gene may be associated with cerebellum-related diseases.
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Affiliation(s)
- Hisako Sugimoto
- Education and Research Support Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Takuro Horii
- Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-machi, Maebashi, 371-8512, Japan
| | - Jun-Na Hirota
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Yoshitake Sano
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Yo Shinoda
- Department of Environmental Health, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Ayumu Konno
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Hajime Hirase
- Center for Translational Neuromedicine, Faculty of Medical and Health Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Izuho Hatada
- Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-machi, Maebashi, 371-8512, Japan
| | - Teiichi Furuichi
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Tetsushi Sadakata
- Education and Research Support Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
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Hoshino C, Konno A, Hosoi N, Kaneko R, Mukai R, Nakai J, Hirai H. GABAergic neuron-specific whole-brain transduction by AAV-PHP.B incorporated with a new GAD65 promoter. Mol Brain 2021; 14:33. [PMID: 33588899 PMCID: PMC7885384 DOI: 10.1186/s13041-021-00746-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 02/04/2021] [Indexed: 01/14/2023] Open
Abstract
GABAergic interneurons play a critical role in tuning neural networks in the central nervous system, and their defects are associated with neuropsychiatric disorders. Currently, the mDlx enhancer is solely used for adeno-associated virus (AAV) vector-mediated transgene delivery into cortical interneurons. Here, we developed a new inhibitory neuron-specific promoter (designated as the mGAD65 promoter), with a length of 2.5 kb, from a mouse genome upstream of exon 1 of the Gad2 gene encoding glutamic acid decarboxylase (GAD) 65. Intravenous infusion of blood-brain barrier-penetrating AAV-PHP.B expressing an enhanced green fluorescent protein under the control of the mGAD65 promoter transduced the whole brain in an inhibitory neuron-specific manner. The specificity and efficiency of the mGAD65 promoter for GABAergic interneurons, which was assessed at the motor cortex, were almost identical to or slightly higher than those of the mDlx enhancer. Immunohistochemical analysis revealed that the mGAD65 promoter preferentially transduced parvalbumin (PV)-expressing interneurons. Notably, the mGAD65 promoter transduced chandelier cells more efficiently than the mDlx enhancer and robustly labeled their synaptic boutons, called the cartridge, targeting the axon initial segments of excitatory pyramidal neurons. To test the ability of the mGAD65 promoter to express a functional molecule, we virally expressed G-CaMP, a fluorescent Ca2+ indicator, in the motor cortex, and this enabled us to monitor spontaneous and drug-induced Ca2+ activity in GABAergic inhibitory neurons. These results suggest that the mGAD65 promoter is useful for AAV-mediated targeting and manipulation of GABAergic neurons with the dominance of cortical PV-expressing neurons, including chandelier cells.
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Affiliation(s)
- Chiaki Hoshino
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22, Gunma, 371-8511 Japan
| | - Ayumu Konno
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22, Gunma, 371-8511 Japan
- Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Gunma, 371-8511 Japan
| | - Nobutake Hosoi
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22, Gunma, 371-8511 Japan
| | - Ryosuke Kaneko
- Bioresource Center, Gunma University Graduate School of Medicine, Gunma, 371-8511 Japan
- Osaka University, Graduate School of Frontier Biosciences, 1-3 Yamadaoka, Suita, Osaka 565-0871 Japan
| | - Ryo Mukai
- Department of Ophthalmology, Gunma University Graduate School of Medicine, 3-39-22, Gunma, 371-8511 Japan
| | - Junichi Nakai
- Division of Oral Physiology, Tohoku University Graduate School of Dentistry, Sendai, 980-8575 Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22, Gunma, 371-8511 Japan
- Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Gunma, 371-8511 Japan
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Ohgami N, Iizuka A, Hirai H, Yajima I, Iida M, Shimada A, Tsuzuki T, Jijiwa M, Asai N, Takahashi M, Kato M. Loss-of-function mutation of c-Ret causes cerebellar hypoplasia in mice with Hirschsprung disease and Down's syndrome. J Biol Chem 2021; 296:100389. [PMID: 33561442 PMCID: PMC7950328 DOI: 10.1016/j.jbc.2021.100389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 01/27/2021] [Accepted: 02/04/2021] [Indexed: 12/11/2022] Open
Abstract
The c-RET proto-oncogene encodes a receptor-tyrosine kinase. Loss-of-function mutations of RET have been shown to be associated with Hirschsprung disease and Down's syndrome (HSCR-DS) in humans. DS is known to involve cerebellar hypoplasia, which is characterized by reduced cerebellar size. Despite the fact that c-Ret has been shown to be associated with HSCR-DS in humans and to be expressed in Purkinje cells (PCs) in experimental animals, there is limited information about the role of activity of c-Ret/c-RET kinase in cerebellar hypoplasia. We found that a loss-of-function mutation of c-Ret Y1062 in PCs causes cerebellar hypoplasia in c-Ret mutant mice. Wild-type mice had increased phosphorylation of c-Ret in PCs during postnatal development, while c-Ret mutant mice had postnatal hypoplasia of the cerebellum with immature neurite outgrowth in PCs and granule cells (GCs). c-Ret mutant mice also showed decreased numbers of glial fibers and mitogenic sonic hedgehog (Shh)-positive vesicles in the external germinal layer of PCs. c-Ret-mediated cerebellar hypoplasia was rescued by subcutaneous injection of a smoothened agonist (SAG) as well as by reduced expression of Patched1, a negative regulator for Shh. Our results suggest that the loss-of-function mutation of c-Ret Y1062 results in the development of cerebellar hypoplasia via impairment of the Shh-mediated development of GCs and glial fibers in mice with HSCR-DS.
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Affiliation(s)
- Nobutaka Ohgami
- Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan; Unit of Environmental Health Sciences, Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Kasugai, Aichi, Japan
| | - Akira Iizuka
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Ichiro Yajima
- Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Machiko Iida
- Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Atsuyoshi Shimada
- Pathology Research Team, Faculty of Health Sciences, Kyorin University, Mitaka, Tokyo, Japan
| | - Toyonori Tsuzuki
- Department of Surgical Pathology, Aichi Medical University Hospital, Nagakute, Aichi, Japan
| | - Mayumi Jijiwa
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Naoya Asai
- Department of Pathology, Fujita Health University, Toyoake, Aichi, Japan
| | - Masahide Takahashi
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan; International Center for Cell and Gene Therapy, Fujita Health University, Toyoake, Aichi, Japan
| | - Masashi Kato
- Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan; Unit of Environmental Health Sciences, Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, Kasugai, Aichi, Japan.
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Sato M, Ohta T, Morikawa Y, Konno A, Hirai H, Kurauchi Y, Hisatsune A, Katsuki H, Seki T. Ataxic phenotype and neurodegeneration are triggered by the impairment of chaperone-mediated autophagy in cerebellar neurons. Neuropathol Appl Neurobiol 2021; 47:198-209. [PMID: 32722888 DOI: 10.1111/nan.12649] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/13/2020] [Accepted: 07/15/2020] [Indexed: 12/13/2022]
Abstract
AIMS Chaperone-mediated autophagy (CMA) is a pathway involved in the autophagy lysosome protein degradation system. CMA has attracted attention as a contributing factor to neurodegenerative diseases since it participates in the degradation of disease-causing proteins. We previously showed that CMA is generally impaired in cells expressing the proteins causing spinocerebellar ataxias (SCAs). Therefore, we investigated the effect of CMA impairment on motor function and the neural survival of cerebellar neurons using the micro RNA (miRNA)-mediated knockdown of lysosome-associated protein 2A (LAMP2A), a CMA-related protein. METHODS We injected adeno-associated virus serotype 9 vectors, which express green fluorescent protein (GFP) and miRNA (negative control miRNA or LAMP2A miRNA) under neuron-specific synapsin I promoter, into cerebellar parenchyma of 4-week-old ICR mice. Motor function of mice was evaluated by beam walking and footprint tests. Immunofluorescence experiments of cerebellar slices were conducted to evaluate histological changes in cerebella. RESULTS GFP and miRNA were expressed in interneurons (satellite cells and basket cells) in molecular layers and granule cells in the cerebellar cortices, but not in cerebellar Purkinje cells. LAMP2A knockdown in cerebellar neurons triggered progressive motor impairment, prominent loss of cerebellar Purkinje cells, interneurons, granule cells at the late stage, and astrogliosis and microgliosis from the early stage. CONCLUSIONS CMA impairment in cerebellar interneurons and granule cells triggers the progressive ataxic phenotype, gliosis and the subsequent degeneration of cerebellar neurons, including Purkinje cells. Our present findings strongly suggest that CMA impairment is related to the pathogenesis of various SCAs.
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Affiliation(s)
- Masahiro Sato
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
- Laboratory for Mechanistic Chemistry of Biomolecules, Department of Chemistry, Keio University, Yokohama, Japan
| | - Tomoko Ohta
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yuri Morikawa
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Ayumu Konno
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yuki Kurauchi
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Akinori Hisatsune
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hiroshi Katsuki
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takahiro Seki
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
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Shimizu Y, Sunagozaka H, Yamagata K, Hirai H, Miura M, Yonemoto Y, Naito Y, Hasatani K, Yoshikawa J, Aoyagi H, Kaneko S. Lenvatinib-induced tumor lysis syndrome in a patient with advanced hepatocellular carcinoma: a case report. Clin J Gastroenterol 2021; 14:645-649. [PMID: 33389590 DOI: 10.1007/s12328-020-01306-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 11/18/2020] [Indexed: 10/22/2022]
Abstract
Tumor lysis syndrome (TLS) is an oncologic emergency caused by release of intracellular tumor components due to massive tumor lysis and is rare in patients with hepatocellular carcinoma (HCC). We describe a case of TLS with rupture of HCC induced by lenvatinib in a patient with advanced HCC. A 72-year-old man who presented with right upper abdominal pain was diagnosed as having advanced HCC with a high tumor burden by contrast-enhanced computed tomography and percutaneous hepatic tumor biopsy. He was started on lenvatinib 12 mg once daily when his tumor progressed despite one-shot hepatic arterial infusion chemotherapy. On day 2 of treatment with lenvatinib, he developed severe upper abdominal pain and was diagnosed as having TLS with HCC rupture by laboratory tests and contrast-enhanced computed tomography. Urgent treatment with transarterial embolization, hemodialysis, and blood transfusion therapy was successful. The patient was then restarted on oral lenvatinib at a reduced dose without recurrence of TLS. TLS is a rare potential complication of lenvatinib in patients with advanced HCC and a high tumor burden.
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Affiliation(s)
- Yoshiaki Shimizu
- Department of Gastroenterology and Hepatology, Fukui Prefectural Hospital, Yotsui 2-8-1, Fukui City, Fukui, 910-8526, Japan.
| | - Hajime Sunagozaka
- Department of Gastroenterology and Hepatology, Fukui Prefectural Hospital, Yotsui 2-8-1, Fukui City, Fukui, 910-8526, Japan
| | - Koki Yamagata
- Department of Gastroenterology and Hepatology, Fukui Prefectural Hospital, Yotsui 2-8-1, Fukui City, Fukui, 910-8526, Japan
| | - Hirokazu Hirai
- Department of Gastroenterology and Hepatology, Fukui Prefectural Hospital, Yotsui 2-8-1, Fukui City, Fukui, 910-8526, Japan
| | - Miyabi Miura
- Department of Gastroenterology and Hepatology, Fukui Prefectural Hospital, Yotsui 2-8-1, Fukui City, Fukui, 910-8526, Japan
| | - Yuichiro Yonemoto
- Department of Gastroenterology and Hepatology, Fukui Prefectural Hospital, Yotsui 2-8-1, Fukui City, Fukui, 910-8526, Japan
| | - Yoshihide Naito
- Department of Gastroenterology and Hepatology, Fukui Prefectural Hospital, Yotsui 2-8-1, Fukui City, Fukui, 910-8526, Japan
| | - Kenkei Hasatani
- Department of Gastroenterology and Hepatology, Fukui Prefectural Hospital, Yotsui 2-8-1, Fukui City, Fukui, 910-8526, Japan
| | - Jun Yoshikawa
- Department of Radiology, Fukui Prefectural Hospital, Fukui, Japan
| | - Hiroyuki Aoyagi
- Department of Gastroenterology and Hepatology, Fukui Prefectural Hospital, Yotsui 2-8-1, Fukui City, Fukui, 910-8526, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
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Inoue A, Kobayashi T, Hirai H, Kanaya N, Kohara K. Protocol for BATTLE-1EX: A High-Resolution Imaging Method to Visualize Whole Synaptic Structures and their Components in the Nervous System. STAR Protoc 2020; 1:100166. [PMID: 33377060 PMCID: PMC7757352 DOI: 10.1016/j.xpro.2020.100166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This protocol describes BATTLE-1EX, which is a combined method of BATTLE-1 and expansion microscopy to obtain high-resolution imaging of whole synaptic structures and their components of hippocampal neural circuits. BATTLE-1 uses two genetically engineered recombinase proteins and competition between two recombinases that can be independently titrated, resulting in a tunable proportion of mCherry+/YFP− and YFP+/mCherry− cells. As a combinational method, BATTLE-1EX has the potential to visualize and dissect whole synaptic structures in numerous regions in the brain. For complete details on the use and execution of this protocol, please refer to Kohara et al. (2020). BATTLE-1EX enables 3D high-resolution imaging of whole synapses in the hippocampus. Split-tunable allocation of transgenes by competition between two recombinases Entire synaptic morphologies can be expanded without changing protein placement Localizations of synaptic proteins can be visualized in whole synaptic structures
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Affiliation(s)
- Akitoshi Inoue
- Department of Medical Chemistry, Kansai Medical University, Graduate School of Medicine, Hirakata, Osaka 573-1010, Japan
| | - Takuya Kobayashi
- Department of Medical Chemistry, Kansai Medical University, Graduate School of Medicine, Hirakata, Osaka 573-1010, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan.,Research Program for Neural Signaling, Division of Endocrinology, Metabolism and Signal Research, Gunma University Initiative for Advanced Research, Maebashi, Gunma 371-8512, Japan
| | - Noriko Kanaya
- Department of Cellular and Functional Biology, Institute of Biomedical Science, Kansai Medical University, Hirakata, Osaka 573-1010, Japan
| | - Keigo Kohara
- Department of Cellular and Functional Biology, Institute of Biomedical Science, Kansai Medical University, Hirakata, Osaka 573-1010, Japan
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Masunaga T, Yoshida N, Akiyama S, Sugiyama G, Hirai H, Miyajima S, Wakita S, Kito Y, Nakanishi H, Tsuji K, Matsunaga K, Tsuji S, Takemura K, Katayanagi K, Minato H, Doyama H. White globe appearance is an endoscopic predictive factor for synchronous multiple gastric cancer. Ann Gastroenterol 2020; 34:183-187. [PMID: 33654357 PMCID: PMC7903575 DOI: 10.20524/aog.2020.0565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 09/16/2020] [Indexed: 11/23/2022] Open
Abstract
Background White globe appearance (WGA) is a small white lesion with a globular shape identified during magnifying endoscopy with narrow-band imaging. However, the association between WGA and synchronous multiple gastric cancer (SMGC) remains unclear. Methods Consecutive patients who underwent endoscopic submucosal dissection for gastric cancer (GC) between July 2013 and April 2015 at our institution were eligible for this study. We excluded patients with a history of gastric tumor or gastrectomy. Patients who had more than 2 GCs in their postoperative pathological evaluation were classified as SMGC-positive, and patients who had at least 1 WGA-positive GC were classified as WGA-positive patients. The primary outcome was a comparison of the prevalence of WGA in patients classified as SMGC-positive and SMGC-negative. Univariate and multivariate analyses were performed using the following variables: WGA, age, sex, atrophy, and Helicobacter pylori (H. pylori) status. Results There were 26 and 181 patients classified as SMGC-positive and SMGC-negative, respectively. Univariate analysis revealed that WGA-positive classification (50% vs. 23%, P=0.008) and male sex (88% vs. 66%, P=0.02) were significant factors associated with SMGC classification, while age ≥65 years (81% vs. 81%, P>0.99), severe atrophy (46% vs. 46%, P>0.99), and H. pylori positivity (69% vs. 65%, P=0.8) were not. In the multivariate analysis, only WGA-positive classification (odds ratio 2.78, 95% confidence interval 1.16-6.67; P=0.02) was a significant independent risk factor for SMGC. Conclusions Our exploratory study showed the possibility of WGA as a predictive factor for SMGC. In cases of WGA-positive gastric cancer, careful examination might be needed to diagnose SMGC.
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Affiliation(s)
- Teppei Masunaga
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Naohiro Yoshida
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Shinichiro Akiyama
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Gen Sugiyama
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Hirokazu Hirai
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Saori Miyajima
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Shigenori Wakita
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Yosuke Kito
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Hiroyoshi Nakanishi
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Kunihiro Tsuji
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Kazuhiro Matsunaga
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Shigetsugu Tsuji
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Kenichi Takemura
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
| | - Kazuyoshi Katayanagi
- Department of Diagnostic Pathology (Kazuyoshi Katayanagi, Hiroshi Minato), Ishikawa Prefectural Central Hospital, Ishikawa, Japan
| | - Hiroshi Minato
- Department of Diagnostic Pathology (Kazuyoshi Katayanagi, Hiroshi Minato), Ishikawa Prefectural Central Hospital, Ishikawa, Japan
| | - Hisashi Doyama
- Department of Gastroenterology (Teppei Masunaga, Naohiro Yoshida, Shinichiro Akiyama, Gen Sugiyama, Hirokazu Hirai, Saori Miyajima, Shigenori Wakita, Yosuke Kito, Hiroyoshi Nakanishi, Kunihiro Tsuji, Kazuhiro Matsunaga, Shigetsugu Tsuji, Kenichi Takemura, Hisashi Doyama)
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Morizane C, Kojima T, Kuboki Y, Bando H, Matsubara N, Shitara K, Yoh K, Hirai H, Kato T, Doi T. 544P Phase I study of the irreversible FGFR inhibitor (i) futibatinib (FBN; TAS-120) in Japanese patients (pts) with advanced (adv) solid tumours. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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42
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Masunaga T, Tsuji K, Hirai H, Miyajima S, Dejima A, Nakashima T, Wakita S, Matsunaga K, Doyama H. [A case of Edwardsiella tarda colitis, which proved challenging to distinguish from immune-related adverse events with nivolumab]. Nihon Shokakibyo Gakkai Zasshi 2020; 117:514-520. [PMID: 32565509 DOI: 10.11405/nisshoshi.117.514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The patient, a man in his 80s, presented with diarrhea following one year of treatment for non-small cell lung cancer with Nivolumab. CT results showed discontinuous wall thickening of the large bowel and cholangitis. Blood and stool culture tests ruled out immune-related adverse events and identified Edwardsiella tarda;bacterial colitis was diagnosed in the patient. This case confirmed that basic examination should not be neglected, and culture tests should be performed.
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Affiliation(s)
- Teppei Masunaga
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital
| | - Kunihiro Tsuji
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital
| | - Hirokazu Hirai
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital
| | - Saori Miyajima
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital
| | - Akihiro Dejima
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital
| | - Takashi Nakashima
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital
| | - Shigenori Wakita
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital
| | | | - Hisashi Doyama
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital
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Kohara K, Inoue A, Nakano Y, Hirai H, Kobayashi T, Maruyama M, Baba R, Kawashima C. BATTLE: Genetically Engineered Strategies for Split-Tunable Allocation of Multiple Transgenes in the Nervous System. iScience 2020; 23:101248. [PMID: 32629613 PMCID: PMC7322263 DOI: 10.1016/j.isci.2020.101248] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 10/02/2019] [Accepted: 06/04/2020] [Indexed: 11/26/2022] Open
Abstract
Elucidating fine architectures and functions of cellular and synaptic connections requires development of new flexible methods. Here, we created a concept called the “battle of transgenes,” based on which we generated strategies using genetically engineered battles of multiple recombinases. The strategies enabled split-tunable allocation of multiple transgenes. We demonstrated the versatility of these strategies and technologies in inducing strong and multi-sparse allocations of multiple transgenes. Furthermore, the combination of our transgenic strategy and expansion microscopy enabled three-dimensional high-resolution imaging of whole synaptic structures in the hippocampus with simultaneous visualizations of endogenous synaptic proteins. These strategies and technologies based on the battle of genes may accelerate the analysis of whole synaptic and cellular connections in diverse life science fields. Generation of BATTLE-recombinase systems for allocation of multiple transgenes Split-tunable allocation in BATTLE-1 and multi-sparse allocation in BATTLE-2 Clear and strong labeling of dendrites and axons using BATTLE-2 3D high-resolution imaging of whole synapses in hippocampus in BATTLE-1EX
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Affiliation(s)
- Keigo Kohara
- Department of Cellular and Functional Biology, Institute of Biomedical Science, Kansai Medical University, Hirakata, Osaka 573-1010, Japan.
| | - Akitoshi Inoue
- Department of Medical Chemistry, Kansai Medical University, Graduate School of Medicine, Hirakata, Osaka 573-1010, Japan
| | - Yousuke Nakano
- Department of Anatomy, Kansai Medical University, Graduate School of Medicine, Hirakata, Osaka 573-1010, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan; Research Program for Neural Signalling, Division of Endocrinology, Metabolism and Signal Research, Gunma University Initiative for Advanced Research, Maebashi, Gunma 371-8512, Japan
| | - Takuya Kobayashi
- Department of Medical Chemistry, Kansai Medical University, Graduate School of Medicine, Hirakata, Osaka 573-1010, Japan; Japan Agency for Medical Research and Development (AMED), Core Research for Evolutional Science and Technology (CREST), 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan
| | - Masato Maruyama
- Department of Anatomy, Kansai Medical University, Graduate School of Medicine, Hirakata, Osaka 573-1010, Japan; Faculty of Pharmaceutical Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan
| | - Ryosuke Baba
- Department of Cellular and Functional Biology, Institute of Biomedical Science, Kansai Medical University, Hirakata, Osaka 573-1010, Japan
| | - Chiho Kawashima
- Department of Cellular and Functional Biology, Institute of Biomedical Science, Kansai Medical University, Hirakata, Osaka 573-1010, Japan; Department of Bioscience, Osaka College of High Technology, Osaka 532-003, Japan
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Ninomiya A, Hosoi N, Kokubo M, Amano I, Haijima A, Miyazaki W, Hirai H, Koibuchi N. SAT-454 A Novel Role of Thyroid Hormone Receptor in Synaptic Plasticity in Cerebellar Purkinje Cells. J Endocr Soc 2020. [PMCID: PMC7207436 DOI: 10.1210/jendso/bvaa046.1706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Thyroid hormone (TH) is essential for the development and the maintenance of the brain function. TH action is mediated by TH receptor (TR). TR binds to a specific DNA sequence on TH-target genes and thus functions as a ligand-dependent transcription factor. In thyroid diseases such as congenital hypothyroidism or resistance to TH (RTH), TH-TR binding is dominantly disrupted, leading to the various symptoms such as motor deficits. However, in such cases, all the cells that express TR get affected by the disrupted TR signaling; thus, the specific mechanism has not been cleared. It has been well known that proper motor coordination is deeply related to long term depression (LTD) of synaptic transmission from parallel fiber (PF) to Purkinje cell (PC) in the cerebellum (Ito, 1989). Therefore, we examined the involvement of TR in synaptic plasticity at PF-PC synapses by using transgenic mice (Mf-1 mice) which express dominant-negative TR specifically in PCs. Since Mf-1 display the impairment of motor coordination and motor learning, a decrease in TR signaling in PCs may alter synaptic plasticity and contribute to motor incoordination. A whole-cell patch clamp recording of Mf-1 PCs revealed the inhibition of LTD but instead the induction of long term potentiation (LTP) of the synaptic transmission at PF-PC synapses. This indicates that the intracellular calcium dynamics may be disrupted in Mf-1 PCs since LTD requires a higher elevation of the intracellular calcium concentration in PCs than LTP does. Indeed, single-PC qPCR showed that the mRNA levels of some important molecules for the intracellular calcium dynamics in PCs (SERCA2, IP3R, and P/Q-type calcium channel) are downregulated in Mf-1 PCs. This result suggests those genes as possible TH-target genes. Taken together, the present study suggested a novel possible role of TR in synaptic plasticity at PF-PC synapses by regulating the expression of some important genes for LTD occurrence in the cerebellum. This finding could give a new insight into the mechanism of motor deficits in thyroid diseases.
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Yasui H, Matsuzaki Y, Konno A, Hirai H. Global Knockdown of Retinoid-related Orphan Receptor α in Mature Purkinje Cells Reveals Aberrant Cerebellar Phenotypes of Spinocerebellar Ataxia. Neuroscience 2020; 462:328-336. [PMID: 32278059 DOI: 10.1016/j.neuroscience.2020.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 12/13/2022]
Abstract
Retinoid-related orphan receptor α (RORα) is a transcription factor expressed in a variety of tissues throughout the body. Knockout of RORα leads to various impairments, including defects in cerebellar development, circadian rhythm, lipid metabolism, immune function, and bone development. Previous studies have shown significant reduction of RORα expression in Purkinje cells (PCs) of spinocerebellar ataxia (SCA) type 1 and type 3/MJD (Machado-Joseph disease) model mice. However, it remains unclear to what extent the RORα reduction in PCs is involved in the disease pathology. Here, RORα expression was downregulated specifically in mature mouse PCs by intravenous infusion of blood-brain barrier-permeable adeno-associated virus (AAV), expressing a microRNA against RORα (miR-RORα) under the control of the PC-specific L7-6 promoter. The systemic AAV infusion led to extensive transduction of PCs. The RORα knock-down caused degeneration of PCs including disruption of the PC monolayer alignment and dendrite atrophy. In behavioral experiments, mice expressing miR-RORα showed motor learning deficits, and later, overt cerebellar ataxia. Thus, RORα in mature PCs plays pivotal roles in maintenance of PC dendrites and the monolayer alignment, and consequently, motor learning and motor function. Decrease in RORα expression in PCs could be a primary etiology of the cerebellar symptoms in patients with SCA1 and SCA3/MJD.
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Affiliation(s)
- Hiroyuki Yasui
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Yasunori Matsuzaki
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan; Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma 371-8511, Japan
| | - Ayumu Konno
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan; Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma 371-8511, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan; Viral Vector Core, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma 371-8511, Japan.
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Ryu Y, Maekawa T, Yoshino D, Sakitani N, Takashima A, Inoue T, Suzurikawa J, Toyohara J, Tago T, Makuuchi M, Fujita N, Sawada K, Murase S, Watanave M, Hirai H, Sakai T, Yoshikawa Y, Ogata T, Shinohara M, Nagao M, Sawada Y. Mechanical Regulation Underlies Effects of Exercise on Serotonin-Induced Signaling in the Prefrontal Cortex Neurons. iScience 2020; 23:100874. [PMID: 32062453 PMCID: PMC7016263 DOI: 10.1016/j.isci.2020.100874] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 01/15/2020] [Accepted: 01/27/2020] [Indexed: 12/28/2022] Open
Abstract
Mechanical forces are known to be involved in various biological processes. However, it remains unclear whether brain functions are mechanically regulated under physiological conditions. Here, we demonstrate that treadmill running and passive head motion (PHM), both of which produce mechanical impact on the head, have similar effects on the hallucinogenic 5-hydroxytryptamine (5-HT) receptor subtype 2A (5-HT2A) signaling in the prefrontal cortex (PFC) of rodents. PHM generates interstitial fluid movement that is estimated to exert shear stress of a few pascals on cells in the PFC. Fluid shear stress of a relevant magnitude on cultured neuronal cells induces ligand-independent internalization of 5-HT2A receptor, which is observed in mouse PFC neurons after treadmill running or PHM. Furthermore, inhibition of interstitial fluid movement by introducing polyethylene glycol hydrogel eliminates the effect of PHM on 5-HT2A receptor signaling in the PFC. Our findings indicate that neuronal cell function can be physiologically regulated by mechanical forces in the brain. Mechanical forces regulate brain functions under physiological conditions Intracerebral interstitial fluid has mechanical roles in regulating brain functions Mechanical impact on the head mediates effects of exercise on the brain Fluid shear stress physiologically modulates signaling in nervous cells
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Affiliation(s)
- Youngjae Ryu
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan; Department of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo 113-8657, Japan
| | - Takahiro Maekawa
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan
| | - Daisuke Yoshino
- Division of Advanced Applied Physics, Institute of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Naoyoshi Sakitani
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan
| | - Atsushi Takashima
- Department of Assistive Technology, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan
| | - Takenobu Inoue
- Department of Assistive Technology, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan
| | - Jun Suzurikawa
- Department of Assistive Technology, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan
| | - Jun Toyohara
- Research Team for Neuroimaging, Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo 173-0015, Japan
| | - Tetsuro Tago
- Research Team for Neuroimaging, Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo 173-0015, Japan
| | - Michiru Makuuchi
- Section of Neuropsychology, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan
| | - Naoki Fujita
- Department of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo 113-8657, Japan
| | - Keisuke Sawada
- University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Shuhei Murase
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan
| | - Masashi Watanave
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Takamasa Sakai
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
| | - Yuki Yoshikawa
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
| | - Toru Ogata
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan
| | - Masahiro Shinohara
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan
| | - Motoshi Nagao
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan
| | - Yasuhiro Sawada
- Department of Rehabilitation for Motor Functions, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan; Department of Clinical Research, National Rehabilitation Center for Persons with Disabilities, Tokorozawa, Saitama 359-8555, Japan.
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Cendelin J, Buffo A, Hirai H, Magrassi L, Mitoma H, Sherrard R, Vozeh F, Manto M. Task Force Paper On Cerebellar Transplantation: Are We Ready to Treat Cerebellar Disorders with Cell Therapy? Cerebellum 2019; 18:575-592. [PMID: 30607797 DOI: 10.1007/s12311-018-0999-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Restoration of damaged central nervous system structures, functional recovery, and prevention of neuronal loss during neurodegenerative diseases are major objectives in cerebellar research. The highly organized anatomical structure of the cerebellum with numerous inputs/outputs, the complexity of cerebellar functions, and the large spectrum of cerebellar ataxias render therapies of cerebellar disorders highly challenging. There are currently several therapeutic approaches including motor rehabilitation, neuroprotective drugs, non-invasive cerebellar stimulation, molecularly based therapy targeting pathogenesis of the disease, and neurotransplantation. We discuss the goals and possible beneficial mechanisms of transplantation therapy for cerebellar damage and its limitations and factors determining outcome.
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Affiliation(s)
- Jan Cendelin
- Department of Pathophysiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 1655/76, 323 00, Plzen, Czech Republic
- Laboratory of Neurodegenerative Disorders, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 1655/76, 323 00, Plzen, Czech Republic
| | - Annalisa Buffo
- Department of Neuroscience Rita Levi-Montalcini, University of Turin, 10126, Turin, Italy
- Neuroscience Institute Cavalieri Ottolenghi, Orbassano, 10043, Turin, Italy
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, 3-39-22, Maebashi, Gunma, 371-8511, Japan
| | - Lorenzo Magrassi
- Neurosurgery, Dipartimento di Scienze Clinico-Chirurgiche Diagnostiche e Pediatriche, Fondazione IRCCS Policlinico S. Matteo, Università degli Studi di Pavia, 27100, Pavia, Italy
- Istituto di Genetica Molecolare - CNR, 27100, Pavia, Italy
| | - Hiroshi Mitoma
- Medical Education Promotion Center, Tokyo Medical University, Tokyo, Japan
| | - Rachel Sherrard
- IBPS, UMR8256 Biological Adaptation and Ageing, Sorbonne Université and CNRS, Paris, France
| | - Frantisek Vozeh
- Department of Pathophysiology, Faculty of Medicine in Pilsen, Charles University, alej Svobody 1655/76, 323 00, Plzen, Czech Republic
- Laboratory of Neurodegenerative Disorders, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, alej Svobody 1655/76, 323 00, Plzen, Czech Republic
| | - Mario Manto
- Department of Neurology, CHU-Charleroi, 6000, Charleroi, Belgium.
- Service des Neurosciences, Université de Mons, 7000, Mons, Belgium.
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Nishitani M, Yoshida N, Tsuji S, Masunaga T, Hirai H, Miyajima S, Dejima A, Nakashima T, Wakita S, Takemura K, Minato H, Kaneko S, Doyama H. Optimal number of endoscopic biopsies for diagnosis of early gastric cancer. Endosc Int Open 2019; 7:E1683-E1690. [PMID: 31803818 PMCID: PMC6887641 DOI: 10.1055/a-1007-1730] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 08/05/2019] [Indexed: 02/06/2023] Open
Abstract
Background and study aims No recommendations are available for optimal number of endoscopic biopsies for early gastric cancer (GC), and whether detection of early GC is improved by increasing the number of biopsy is unclear. We therefore evaluated the relationship between number of biopsies and diagnostic accuracy. Materials and methods We retrospectively evaluated 858 early GCs (623 from endoscopic submucosal dissection and 235 surgical specimens), which we classified as obtained after one, two, or three or more biopsies. We assessed diagnostic accuracy by number of biopsies, and in subgroups by tumor diameter, gross type, and surface color. Results Almost half the lesions were obtained after one biopsy each, 30 % after two biopsies, and 20 % after three or more biopsies. Although diagnostic accuracy increased with biopsy number, it was significantly greater for the two-biopsy group than the one-biopsy group, (92.5 % vs. 83.9 %, P = 0.0009), but did not significantly differ between the two- and three or more-biopsy groups. This finding was seen when tumors were evaluated by size, but not by elevated type and surface color, for which more biopsies did not improve diagnostic accuracy. Multivariate analysis demonstrated that two or more biopsies was the independent significant factors for diagnostic accuracy. Conclusions Two biopsies are the optimal number required to diagnose early GC.
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Affiliation(s)
- Masaki Nishitani
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan,Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Naohiro Yoshida
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan,Corresponding author Naohiro Yoshida Department of GastroenterologyIshikawa Prefectural Central Hospital2-1 Kuratsukihigashi, KanazawaIshikawa 920-8530Japan+81-76-238-2337
| | - Shigetsugu Tsuji
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Teppei Masunaga
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Hirokazu Hirai
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Saori Miyajima
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Akihiro Dejima
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Takashi Nakashima
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Shigenori Wakita
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Kenichi Takemura
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Hiroshi Minato
- Department of Diagnostic Pathology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Hisashi Doyama
- Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
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Matsumoto K, Mitani TT, Horiguchi SA, Kaneshiro J, Murakami TC, Mano T, Fujishima H, Konno A, Watanabe TM, Hirai H, Ueda HR. Advanced CUBIC tissue clearing for whole-organ cell profiling. Nat Protoc 2019; 14:3506-3537. [DOI: 10.1038/s41596-019-0240-9] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 08/28/2019] [Indexed: 11/09/2022]
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Takahashi H, Kawakita D, Fushimi C, Nagao T, Hirai H, Saigusa N, Masubuchi T, Matsuki T, Okada T, Baba D, Miura K, Saotome T, Tada Y. Trastuzumab plus docetaxel in patients with advanced HER2-positive salivary duct carcinoma: Exploratory biomarker analyses. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz252.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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